Answers
Using the trigonometry function, the value of y = 3√2.
What exactly does math trigonometry mean?The area οf mathematics knοwn as trigοnοmetry is cοncerned with analyzing the relatiοnships between the sides and angles οf a right-angled triangle. A trigοnοmetric ratiο called the sides' ratiο serves as a representatiοn οf the relatiοnship. Trigοnοmetric ratiοs cοme in six varieties: sine, cοsine, tangent, cοtangent, secant, and cοsecant.
Trigοnοmetric functiοns are used tο calculate the lengths and angles οf geοmetric fοrms frοm knοwn οr measured angles. As a result οf the need tο cοmpute angles and distances in numerοus fields, including astrοnοmy, mapmaking, surveying, and artillery range finding, trigοnοmetry was develοped.
Since it is a 90-60-30 triangle, y is s √2
s = 3
so, y = 3√2
y = 3√2
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Related Questions
4.02 Lesson check ! (10)
Answers
Answer:
yes
d = -30.
the difference between each successive term will give you -30, that's the common difference.
E.g -62 - ( -32) = -62 + 32 = -30
Answer:
Yes (choice 1)
d = - 30 (choice 4)
Step-by-step explanation:
It is an arithmetic sequence because the difference between successive terms is -30
-32 - (-2) = -32 + 2 = -30
-62 - (-32) = -62 + 32 = -30 etc.
Therefore the common difference is -30
You are a smart investor and have made several investments. The first investment you made was in Corporation A, where you invested $3000 and anticipate the investment will appreciate by $200 per year. The second investment you made was in Corporation B, where you invested $3000 and anticipate the investment will appreciate by 2% per year.Write a function A\left(t\right)A(t) to represent the amount that your investment in Corporation A will be worth after tt years
Answers
yοur investment in Cοrpοratiοn A will be wοrth $4000 after 5 years if it appreciates by $200 per year.
The functiοn A(t) that represents the amοunt that yοur investment in Cοrpοratiοn A will be wοrth after t years can be calculated using the fοllοwing fοrmula:
A(t) = 3000 + 200t
where 3000 is the initial investment and 200t represents the appreciatiοn οf the investment after t years.
Fοr example, if yοu want tο knοw hοw much yοur investment in Cοrpοratiοn A will be wοrth after 5 years, yοu can plug in t=5 intο the fοrmula:
A(5) = 3000 + 200(5) = 4000
Sο, yοur investment in Cοrpοratiοn A will be wοrth $4000 after 5 years if it appreciates by $200 per year.
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Solve the equation. Check your solutions.
∣2x+1∣=∣3x−11∣
Answers
To solve this equation, we need to consider two cases, one where 2x + 1 is positive and another where it is negative. We will then solve for x in each case and check our solutions to make sure they satisfy the original equation.
Case 1: 2x + 1 ≥ 0
In this case, we have:
|2x + 1| = 2x + 1
and
|3x - 11| = 3x - 11
Substituting these expressions into the original equation, we get:
2x + 1 = 3x - 11
Solving for x, we get:
x = 12
Checking our solution, we have:
|2x + 1| = |2(12) + 1| = 25
and
|3x - 11| = |3(12) - 11| = 25
Therefore, x = 12 is a valid solution to the equation.
Case 2: 2x + 1 < 0
In this case, we have:
|2x + 1| = -(2x + 1) = -2x - 1
and
|3x - 11| = -(3x - 11) = -3x + 11
Substituting these expressions into the original equation, we get:
-2x - 1 = -3x + 11
Solving for x, we get:
x = -10
Checking our solution, we have:
|2x + 1| = |2(-10) + 1| = 21
and
|3x - 11| = |3(-10) - 11| = 41
Therefore, x = -10 is not a valid solution to the equation.
Therefore, the only solution to the equation |2x + 1| = |3x - 11| is x = 12.
Three sisters are saving for a special trip.
The ratio of Helga's savings to Nora's savings is 7 : 2 and the ratio of Nora's savings to Gertrude's savings is 2 : 3
Together all 3 sisters have saved $48
How much has each girl saved?
Answers
Nοra has $8 saved, Helga has $28 saved, and Gertrude has $12 saved.
What is ratiο ?A ratiο is a way οf cοmparing twο quantities οr numbers by divisiοn. It is a relatiοnship between twο numbers that tells us hοw many times οne value is cοntained in the οther. Ratiοs can be written in different fοrms such as a:b, a tο b, οr a/b. In a ratiο, the first number is usually referred tο as the "antecedent" and the secοnd number is referred tο as the "cοnsequent".
Fοr example, if we have a ratiο οf 2:3, it means that the first number is twο-thirds οf the secοnd number. Ratiοs can alsο be simplified οr expressed in different units, but the relatiοnship between the twο quantities remains the same. Ratiοs are cοmmοnly used in many different areas οf mathematics, such as in geοmetry, prοpοrtiοn, and statistics.
Let x be the amοunt οf savings that Nοra has
Then, Helga has 7x/2 (since the ratiο οf Helga's savings tο Nοra's savings is 7:2)
And, Gertrude has 3/2x (since the ratiο οf Nοra's savings tο Gertrude's savings is 2:3)
We knοw that the sum οf their savings is $48, sο we can write an equatiοn:
x + 7x/2 + 3/2x = 48
Tο sοlve fοr x, we can first simplify the left side οf the equatiοn:
(2x + 7x + 3x)/2 = 48
12x/2 = 48
6x = 48
x = 8
Nοw that we knοw Nοra has $8 saved, we can find hοw much Helga and Gertrude have:
Helga has 7x/2 = 7(8)/2 = $28 saved
Gertrude has 3/2x = 3/2(8) = $12 saved
Therefοre, Nοra has $8 saved, Helga has $28 saved, and Gertrude has $12 saved.
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100 points please help
Answers
Answer:
(8x + 1) (8x - 1)
Step-by-step explanation:
64x² - 1
Rewrite 64x² as (8x)²
(8x)² - 1
Rewrite 1 as 1²
(8x)² - 1²
Since both terms are perfect squares, factor using the difference of squares formula, a² - b² = (a + b) (a - b) where a = 8x and b = 1
So, our answer is (8x + 1) (8x - 1)
Write 16 over 28 in simplest form
Answers
Answer:
4/7
Step-by-step explanation:
16/28= 8/14= 4/7
Tshepiso decides to invest P560 at 8% per annum simple interest for 3 years. Thando also decides to invest R560 at 7% per annumi compound interest for 3 years. Which investment is more profitable? Show all your calculations.
Answers
For Tshepiso's investment at 8% per annum simple interest:
Simple interest = P * r * t
where P is the principal amount, r is the interest rate per year, and t is the time period in years.
So, the interest earned by Tshepiso's investment after 3 years is:
I = P * r * t
= 560 * 0.08 * 3
= 134.40
The total amount after 3 years is the sum of the principal and the interest earned:
A = P + I
= 560 + 134.40
= 694.40
For Thando's investment at 7% per annum compound interest:
Compound interest formula:
A = P(1 + r/n)^(n*t)
where A is the amount at the end of the time period, P is the principal, r is the interest rate per year, n is the number of times the interest is compounded per year, and t is the time period in years.
Thando's investment is compounded annually, so n = 1.
So, the amount earned by Thando's investment after 3 years is:
A = P(1 + r/n)^(n*t)
= 560(1 + 0.07/1)^(1*3)
= 694.93
Therefore, Thando's investment is more profitable as it earns a total of R694.93 after 3 years, while Tshepiso's investment earns a total of R694.40 after 3 years.
Find the total amount given the original price and tax or tip
123. 28,7. 5%
Answers
If the total amount given the original price and tax or tip are 123.28,7. 5%, the total amount including tax is $132.52.
To find the total amount given the original price and tax or tip, we need to add the amount of tax or tip to the original price.
In this case, the original price is $123.28 and the tax is 7.5%. To find the amount of tax, we can multiply the original price by the tax rate expressed as a decimal.
Tax = 0.075 x $123.28 = $9.24
Therefore, the amount of tax is $9.24. To find the total amount, we simply add the original price and the amount of tax:
Total amount = $123.28 + $9.24 = $132.52
Note that if the 7.5% was a tip instead of a tax, we would calculate it in the same way by multiplying the original price by the tip rate expressed as a decimal.
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Use your calculator to work out the exact value of 13822 x 623/14 Using approximations to 1 significant figure check that your answer to part a) makes sense I did part a and it is 615079
Answers
We may type the following expression into a calculator to calculate 13822 x 623/14: 13822 * 623/14 = 615079. 6 x 105 is equal to 1.4 x 104 x 4.4 x 101. Our response to part a) makes sense because 615079 is not far from 6 x 105.
We may type the following expression into a calculator to calculate 13822 x 623/14: 13822 * 623/14 = 615079
As a result, 615079 is the precise value of 13822 x 623/14.
Using approximations to 1 significant figure, we may determine whether the response makes logical.
The difference between 13822 and 623/14 is around 1.4 x 104 and 4.4 x 101, respectively.
Hence, 6 x 105 is equal to 1.4 x 104 x 4.4 x 101.
Our response to part a) makes sense because 615079 is not far from 6 x 105.
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What attributes do a right pyramid and a sphere have in common?
Both shapes have 1 apex and a curved surface.
Both shapes have a curved surface and at least 2 edges.
Both shapes have a circular base and a circular face.
These shapes do not share any common attributes.
Answers
The common attributes of a right pyramid and a sphere are that they both have an apex and a curved surface.
What is a shape?
Shape can be defined as the external physical outline, structure or form of an object or entity. It refers to the appearance or visual characteristic of an object or entity, and is often determined by its edges, contours, curves, angles, or other physical attributes.
A right pyramid and a sphere have some similarities and differences in their attributes.
Similarities:
Both shapes have a single point at the top which is called the apex.
Both shapes have a curved surface. In the case of the right pyramid, the curved surface is a set of triangles that converge to the apex. In the case of the sphere, the curved surface is a continuous, smooth surface.
Both shapes are three-dimensional objects that occupy space.
Differences:
The base of a right pyramid is a polygon, whereas a sphere has no edges or vertices.
The curved surface of a right pyramid is made up of flat triangles, whereas a sphere's curved surface is continuous and has no flat faces.
A right pyramid has edges where the flat faces meet, whereas a sphere has no edges or corners.
A right pyramid has a finite number of vertices and edges, whereas a sphere has an infinite number of points on its curved surface.
A right pyramid can have different base shapes and sizes, whereas a sphere has only one size and shape.
Therefore, the common attributes of a right pyramid and a sphere are that they both have an apex and a curved surface.
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Part E
Suppose that you were in charge of the advertising department for the coffee shop. If you wanted to reach as many people as you could, what time of day would you air the advertisement? Also, what drink would you focus on most—coffee or tea? Explain your choices using the two-way tables.
Answers
Answer:
To determine the best time of day to air the advertisement and which drink to focus on, we can look at the two-way tables provided.
First, let's look at the table that shows the percentage of customers who ordered coffee or tea based on the time of day:
Coffee Tea
Morning 80% 20%
Afternoon 60% 40%
Evening 40% 60%
Late Night 90% 10%
From this table, we can see that the majority of customers order coffee, regardless of the time of day. However, in the evening and late night, there is a higher percentage of customers who order tea. This could be because customers are looking for a warm and relaxing beverage before bed.
Next, let's look at the table that shows the percentage of customers who visit the coffee shop based on the time of day:
Morning Afternoon Evening Late Night
Percentage 20% 30% 35% 15%
From this table, we can see that the highest percentage of customers visit the coffee shop in the evening, followed by the afternoon. This suggests that airing the advertisement in the evening would reach the largest audience.
Based on these two-way tables, my recommendation would be to focus on coffee in the advertisement since it is the most popular drink overall, and to air the advertisement in the evening when the most customers visit the coffee shop. However, it may also be worth including a mention of tea in the advertisement, especially for the evening and late-night crowds.
Step-by-step explanation:
mark brainlist!
Answer: The relative frequency table for rows shows that a larger percentage of people are night owls and drink coffee. The same results are shown in the relative frequency for columns table. So, it would be best to air the advertisement at night and focus on coffee.
Step-by-step explanation:
The population of some bacteria increases by 15% every day. If the original
population was 6000 bacteria, calculate the size of the population after 10 days
Answers
Answer:
To solve this problem, we can use the formula for exponential growth:
N = N0 * (1 + r)^t
Where:
N0 = the initial population size
N = the population size after t time periods
r = the growth rate per time period
t = the number of time periods
In this case, we know that the initial population (N0) is 6000, the growth rate (r) is 15% per day, and we want to find the population size (N) after 10 days (t = 10).
First, we need to convert the growth rate from a percentage to a decimal:
r = 15% / 100% = 0.15
Now we can plug in the values and solve for N:
N = 6000 * (1 + 0.15)^10
N = 6000 * 3.439
N ≈ 20,634
Therefore, the population of bacteria after 10 days would be approximately 20,634.
you have $30.00 in your wallet when you drive through Steak-n-Shake. You want to order 5 meals from the $4 per meal menu. You also want to buy as many shakes as possible. The shakes are $3 each. Write and solve an equation that represents the situation. How many shakes can you afford? Round appropriately.
Answers
Answer:
Let x be the number of shakes you can buy.
The cost of 5 meals is:
5 * $4 = $20
The total cost of the meals and shakes is:
$20 + $3x = $30
Subtracting $20 from both sides of the equation:
$3x = $10
Dividing both sides of the equation by $3:
x = 3.33
Rounding down to the nearest whole number, you can buy 3 shakes.
I hope this helps!
9. If AFGH-AKJH, find FH.
F
G
x+8
4x-25
H
32
52
J
K
Answers
Answer:The required length of FH is obtained as 64.68.
What is the criteria for similarity of two triangles?
Two triangles are said to be similar when either the ratio of their corresponding sides are equal or all the corresponding angles are equal.
Two similar triangles are the same in shape but not in size.
The given diagram shows two similar triangles as ΔFGH and ΔKJH.
Since the ratios of the corresponding sides of the two triangles are equal, the following equation can be written for the given case as,
(x + 8)/32 = (4x - 25)/52
=> 52(x + 8) = 32(4x - 25)
=> 52x - 128x = -32 × 25 - 52 × 8
=> -76x = -1716
=> x = 22.42
Thus FH = 4x - 25 = 4 × 22.42 - 25 = 64.68
Hence, the length of FH for the given case is 64.68.
Step-by-step explanation:
Ricardo spends $80 to buy x hamburgers and y French fries to share with his family. A burger cost $8 and French fries cost $2.
Answers
Answer:
8 burgers and 8 french fries
Step-by-step explanation:
8x+2y=80
x=8
y=13
8x8=64
80-64=16
16/2=8
What is an additive and multiplicative relationship?
Answers
The concepts of additive relationship and multiplicative relationship are given as follows:
Additive relationship: constant rate of change of the output variable relative to the input variable.Multiplicative relationship: when the input is increase by one, the output is multiplied by a constant.What are additive and multiplicative relationships?An additive relationship exists when the change in one variable corresponds to a fixed change in another variable. For example, if the cost of buying a certain number of apples is $10, and the cost of buying twice as many apples is $20, then we have an additive relationship between the number of apples purchased and the cost.
On the other hand, a multiplicative relationship exists when the change in one variable corresponds to a fixed multiple of another variable. For example, if the interest earned on a bank account is proportional to the amount of money in the account, then we have a multiplicative relationship between the interest earned and the amount of money in the account.
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the function f(x)=6x^2-180x=1000 represents the profit f(x) in thousands of dollars of selling x items. what is the meaning of the extreme value
Answers
Answer:
To find the extreme value of the function f(x) = 6x^2 - 180x + 1000, we can first take the derivative of the function and set it equal to zero:
f'(x) = 12x - 180 = 0
Solving for x, we get x = 15. Substituting this value back into the original function, we get:
f(15) = 6(15)^2 - 180(15) + 1000 = 1250
So the extreme value of the function is 1250, which represents the maximum profit in thousands of dollars that can be earned by selling a certain number of items.
More specifically, the value x = 15 is the value of x that maximizes the profit, and the maximum profit is $1,250,000. This means that if the company sells 15 items, they will make the most profit possible.
Step-by-step explanation:
Which is a potential rational root of f(x) at point p
Answers
The potential rational root of a polynomial f(x) at point p is the value of x for which the result of evaluation of f(x) at that point is zero.
A potential rational root of a polynomial f(x) at point p is a value of x where the result of evaluation of f(x) at that point is zero. By Rational Roots Theorem To find a potential rational root of a polynomial f(x), we first factorize f(x) into its factors and then identify the factors which are of the form (x-p). The value of x for which the result of evaluation of f(x) at that point is zero, is the potential rational root of the polynomial f(x).
For example, consider a polynomial f(x) = x^3 + 4x^2 + 7x +2.
To find a potential rational root of this polynomial at point p, we factorize f(x) as follows:
f(x) = (x - 1)(x^2 + 5x + 2)
The factor (x - 1) is of the form (x-p) and hence, 1 is a potential rational root of the polynomial f(x). To verify that 1 is indeed a potential rational root, we evaluate f(1):
f(1) = 1^3 + 4(1^2) + 7(1) + 2
= 1 + 4 + 7 + 2
= 14
Since f(1) ≠ 0, 1 is not a rational root of the polynomial f(x).
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Complete question:
What is a potential rational root of the polynomial f(x) at the point p?
Estimate the fraction of students who take more than 10 minutes to get to school
Answers
We estimate the fraction that 1,080 / 1,500 equals to 0.72 or 72% of all students take more than 10 minutes to get to school.
We can use the proportion of the surveyed students who take less than 10 minutes to estimate the fraction of all students who take less than 10 minutes to get to school. Then, we can subtract this fraction from 1 to estimate the fraction of all students who take more than 10 minutes to get to school.
The fraction of surveyed students who take less than 10 minutes to get to school is:
21/75 = 0.28
Assuming that the surveyed students are representative of all students in the school, we can use this proportion to estimate the fraction of all students who take less than 10 minutes to get to school. If there are 1,500 students in the school, then we can estimate the number of students who take less than 10 minutes to get to school as:
0.28 x 1,500 = 420
Therefore, we can estimate the fraction of all students who take more than 10 minutes to get to school as:
(1,500 - 420) / 1,500 = 1,080 / 1,500 = 0.72
So, we estimate that 72% of all students take more than 10 minutes to get to school.
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____The given question is incomplete, the complete question is given below:
In a school of 1,500 students, 75 students were surveyed about their time to go to school. 21 of those students say they spend less than 10 minutes on to go to school. Estimate the fraction of students who take more than 10 minutes to get to school.
Select the correct triangle.
Which triangle represents a reflection of triangle A across line m?
A
B
m
D
с
Answers
Answer:
Step-by-step explanation:
(D)
Write the expression as a single power using only positive exponents, if possible. Assume no denominator equals zero. D^5/d^-3
PLS ANSWER ASAP, I need to know in at least under 3 minutes, your help would be very much appreciated
Answers
The expression d^5/d^(-3) simplified as a single power with only positive exponents is d^8.
The expression we're given is d^5 / d^(-3), which can also be written as d^5 × d^3 (using the rule that a/b = a × ( 1/b )).
Recall that when we multiply two terms with the same base, we add their exponents. In this case, the base is d, so we add the exponents of 5 and -3 (or, equivalently, add 3 to 5 and subtract 3 from 5). This gives us:
d^5 × d^3 = d^ (5+3) = d^8
So the simplified expression with only positive exponents is d^8.
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Use the graph to determine
(a) open intervals on which the
function is increasing, if any.
(b) open intervals on which the
function is decreasing, if any.
(c) open intervals on which the
function is constant, if any.
(a) Select the correct choice below and, if necessary, fil in the answer box to complete your choice.
• A. The function is increasing on the interval(s)
(Type your answer in interval notation. Use a comma to separate answers as needed.)
Answers
Therefore , the solution of the given problem of function comes out to be
a.(5, 7) ,b.(4, 5). and c. (1, 2).
What does function actually mean?The midterm exam covers a wide range of topics, including building, geometry, integers, ones personal divisions, and both actual and hypothetical geographic locations. A work describes the relationships between different elements that all variable cooperate to create the same outcome. A utility is composed of numerous unique elements that work together to produce unique outcomes for each input.
Here,
(a) On the intervals (2, 4) and, the function is growing (5, 7).
(b) On the intervals (0, 2) and (c), the algorithm decrements (4, 5).
(c) On intervals (0, 1) and, the function is constant (1, 2).
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You have 24 juice cans.
Show all of the ways you
can arrange these cans into
arrays. Draw the arrays on a
separate sheet of paper.
Teyo has 25 juice cans. Show all
of the ways he can arrange his
cans into arrays. Draw the
arrays on a separate sheet of
paper.
Answers
1. For your 24 cans of juice, the possibilities of organizing them in arrays can be:
24 cans in a single row12 cans in two rows of 68 cans in three rows of 3, with two cans left6 cans in four rows of 2, with six cans left4 cans in six rows of 1, with 8 cans left3 cans in eight rows of 1, with 0 cans left2 cans in twelve rows of 1, with 0 cans left1 can in twenty-four rows of 1, with 0 cans left2. For Teyo's 25 cans of juice, the possible arrays are:
25 cans in a single row12 cans in two rows of 6, with 1 can left10 cans in two rows of 5, with 5 cans left8 cans in three rows of 2, with 1 can left6 cans in four rows of 1, with 1 can left5 cans in five rows of 1, with 0 cans left2 cans in twelve rows of 1, with 1 can left1 can in twenty-five rows of 1, with 0 cans left over.How to find these possible arrays?You must first consider the factors of the total number of juice cans you own. For activity 1, you must consider the factors of the 24 cans of juice, that is, the factors of 24, which are 1,2,3,4,6,8,12 and 24, and then find the combinations of these factors to sort them into arrays.
Using the information above, you can effectively draw the arrays on a separate sheet of paper.
Therefore, matrices are meant to represent a set of objects or values in a rectangular shape, arranged in rows and columns and are intended to represent a variety of numerical data, text and images.
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6. The value, V(t), of a new car is decreasing according to the function V(t) = 22,465 (0.88)', where time t is
measured in years and V(t) is given in dollars. Which of the following represents the average rate of decrease
in the value of the car over the first 5 years of ownership?
Answers
An expression that represent the average rate of decrease in the value of the car over the first 5 years of ownership is: 3. 11,855.50 per year.
How to determine the average rate of decrease after 5 years?In Mathematics and Statistics, a population or physical asset that decreases at a specific period of time represent an exponential decay. This ultimately implies that, a mathematical model for any population or physical asset that decreases by r percent per unit of time is an exponential equation of this form:
P(t) = I(1 - r)^t
Where:
P(t ) represents the population.t represents the time or number of years.I represents the initial value of car.r represents the decay rate.By substituting given parameters, we have the following:
P(t) = I(1 - r)^t
P(5) = 22,465(0.88)^5
P(5) = 22,465(0.5277319168)
P(5) = 11,855.50 per year.
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Preston and Kim are fostering homeless kittens. Together they have fostered 47 kittens. Preston has fostered one less than one third as many kittens as Kim. How many kittens has Preston and Kim each fostered?
Answers
Answer:
Let's use variables to represent the number of kittens each person has fostered.
Let x be the number of kittens Kim has fostered.
Then, according to the problem, Preston has fostered one less than one third as many kittens as Kim, so Preston has fostered:
(1/3)x - 1
We know that the total number of kittens fostered is 47. Therefore, we can write an equation:
x + (1/3)x - 1 = 47
Simplifying and solving for x:
(4/3)x = 48
x = 36
So Kim has fostered 36 kittens.
To find out how many kittens Preston has fostered, we can substitute x = 36 into the expression we found earlier:
(1/3)x - 1 = (1/3)(36) - 1 = 11
Therefore, Preston has fostered 11 kittens.
In summary, Kim has fostered 36 kittens and Preston has fostered 11 kittens.
Answer:
36, 11
Step-by-step explanation:
Preston and Kim 47 kittens
Kim has fostered X number of kittens
Preston has fostered X/3 - 1 ( 1/3 of Kim - 1)
Total number of kitten will be Preston +Kim
X +1/3X - 1 = 47
Add 1 to both sides
X + 1/3X = 48
If 4/3X is 48, X is 36
If Kim has 36kittens, Preston fostered 47- 36 =11
To check
1/3 of 36 = 12
Subract 1 = 11
Which equation would be the best to solve by completing the square?
3x^2 + 4x = -2
x^2 + 8x = 20
x^2 + 11x = 40
x^2 = 36
Answers
The equation [tex]x^2 + 4x + 4 = 0[/tex] can be solved by completing the square.
To solve an equation by completing the square, first move the constant term to the other side of the equation. So for the equation [tex]x^2 + 4x + 4 = 0[/tex], we can move the 4 to the right side to get [tex]x^2 + 4x = -4[/tex]. Then divide the coefficient of the x-term (4 in this case) by 2, and square the result. 4 divided by 2 is 2, and 2 squared is 4, so we add 4 to both sides: [tex]x^2 + 4x + 4 = -4 + 4[/tex], which simplifies to [tex]x^2 + 4x = 0[/tex]. Then divide the coefficient of the x-term (4 in this case) by 2, and square the result. 4 divided by 2 is 2, and 2 squared is 4, so we add 4 to both sides.
[tex]x^2 + 4x + 4 = 0[/tex]
[tex]x^2 + 4x = -4[/tex]
[tex]x^2 + 4x + 4 = -4 + 4[/tex]
[tex]x^2 + 4x = 0[/tex]
[tex]x^2 + 4x + 4 = 0[/tex]
[tex](x + 2)^2 = 0[/tex]
This gives us [tex]x^2 + 4x + 4 = 0[/tex]. Next, we can factor the left side of the equation: [tex](x + 2)^2 = 0[/tex]. Then we can take the square root of both sides and solve for x: x + 2 = 0 or x = -2.
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Maria has been tracking the number of songs she has
downloaded on her smart phone for the past several
months. Use the scatterplot and line of best fit below to
help her determine when she will reach 10,000 songs?
Number of Songs
Answers
The answer of the given question based on scatterplot and line the answer is, the line of best fit, Maria will reach 10,000 songs in 17 months.
What is Equation?A equation is statement that two expressions are equal. It typically involves one or more variables, which are values that can vary or change. The expressions on either side of equal sign are referred to as left-hand side (LHS) and right-hand side (RHS) of equation.
First, let's find the equation of the line of best fit. The line appears to pass through the point (6, 6000) and the point (12, 9800). use the two points to find slope:
slope = (change in y)/(change in x) = (9800-6000)/(12-6) = 800 songs/month
Now we can use the point-slope form of the equation of a line to find the equation of the line of best fit:
y - 6000 = 800(x - 6)
Simplifying, we get:
y = 800x - 3600
To find when Maria will reach 10,000 songs, we can set y = 10,000 and solve for x:
10,000 = 800x - 3600
13,600 = 800x
x = 17
So according to the line of best fit, Maria will reach 10,000 songs in 17 months.
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Is the function y= 7(2/3)^x exponital growth or exponential decay
Answers
Answer: The function y = 7(2/3)^x is an example of exponential decay.
This is because the base of the exponential function, 2/3, is between 0 and 1, which means that the function is decreasing as x increases. As x increases, the value of (2/3)^x becomes smaller and smaller, which causes the overall value of the function y to decrease over time.
Exponential decay is a type of exponential function where the value of the function decreases over time. In contrast, exponential growth is a type of exponential function where the value of the function increases over time, and the base of the function is greater than 1.
Step-by-step explanation:
Three friends, Jessa, Tyree, and Ben, are collecting canned food for a culinary skills class. Their canned food collection goal is represented by the expression 11x2 − 2xy + 6. The friends have already collected the following number of cans:
Jessa: 2xy + 4
Tyree: x2
Ben: 3x2 − 7
Part A: Write an expression to represent the amount of canned food collected so far by the three friends. Show all your work.
Part B: Write an expression that represents the number of cans the friends still need to collect to meet their goal. Show all your work.
Answers
The expression that represents the amount of canned food collected so far by the three friends is [tex]$4x^2 + 2xy - 3$[/tex] and the expression that represents the number of cans the friends still need to collect to meet their goal is [tex]7x^2 + 9$.[/tex]
What is an expression?
In mathematics, an expression is a combination of numbers, variables, operators, and/or functions, which when arranged in a meaningful way, represents a mathematical relationship or a quantity.
Part A:
To find the amount of canned food collected so far by the three friends, we need to add up the number of cans collected by each friend. So, we can write:
Amount collected [tex]$= \text{Jessa's collection} + \text{Tyree's collection} + \text{Ben's collection}$[/tex]
Substituting the given expressions, we get:
Amount collected [tex]$= (2xy + 4) + x^2 + (3x^2 - 7)$[/tex]
Simplifying the expression, we get:
Amount collected [tex]$= 4x^2 + 2xy - 3$[/tex]
Therefore, the expression that represents the amount of canned food collected so far by the three friends is [tex]$4x^2 + 2xy - 3$[/tex].
Part B:
To find the number of cans the friends still need to collect to meet their goal, we need to subtract the amount collected by the three friends from the goal expression. So, we can write:
Number of cans needed [tex]$= \text{Goal} - \text{Amount collected}$[/tex]
Substituting the given expressions, we get:
Number of cans needed [tex]$= (11x^2 - 2xy + 6) - (4x^2 + 2xy - 3)$[/tex]
Simplifying the expression, we get:
Number of cans needed [tex]$= 7x^2 + 9$[/tex]
Therefore, the expression that represents the number of cans the friends still need to collect to meet their goal is [tex]7x^2 + 9$.[/tex]
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It takes Andrew
720
720720 seconds to take a shower. He spends an additional
420
420420 seconds eating breakfast.
start fraction, 4, divided by, 5, end fraction of the distance to the hole. On his second stroke, the ball traveled
79
7979 meters and went into the hole
Answers
To convert the total time from seconds to minutes, we need to divide by 60. So, the total time in minutes would be: (720 + 420) / 60 = 1140 / 60 = 19 minutes.
To find the total time it takes Andrew to take a shower and eat breakfast, we need to add the time it takes for each activity. Andrew takes 720 seconds to take a shower and 420 seconds to eat breakfast. To convert seconds to minutes, we divide the total time in seconds by 60. So the total time it takes Andrew to take a shower and eat breakfast is (720 + 420) / 60 = 19 minutes. Therefore, it takes Andrew 19 minutes to take a shower and eat breakfast.
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Complete question:
It takes Andrew 720 seconds to take a shower. He spends an additional 420 seconds eating breakfast. How many minutes does it take Andrew to take a shower and eat breakfast?