Answer: Jayda finishes 39 pages in 1 hour
Step-by-step explanation:
156/4 gives us her rate since we have to find 1 hour, not 4 hours.
This is 39
I hope this way able to help you :D
Can you help me I really need help
In the given situation the given values can be correctly modeled by a (B) linear function.
What is a linear function?
A linear function has a straight line as its graph. A linear function has the form shown below. a + bx = y = f (x).
A linear function consists of one independent variable and one dependent variable.
The independent and dependent variables are X and Y, respectively.
In mathematics, the terms "linear function" refers to two distinct but connected concepts: In calculus and related subjects, a polynomial function of degree zero or one with a graph that is a straight line is referred to as a linear function.
Therefore, in the given situation the given values can be correctly modeled by a (B) linear function.
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Segment LP = 3. Find the length of L'P' if LP is dilated with a scale factor of -4
The length of the segment after dilation with a scale factor of -4 is -12.
What is scale factor?The ratio of the scale of an original thing to a new object that is a representation of it but of a different size is known as a scale factor.
What is dilation?Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is a picture with the same shape as the original. However, there is a variation in the shape's size.
Given that the segment LP is dilated with a scale factor of -4. In simple words, the length of the segment is increased to -4 times of its original length.
This is represented as follows:
L'P' = -4 (LP)
Substitute the value of LP = 3:
L'P' = -4 (3)
L'P' = -12
Hence, the length of the segment after dilation with a scale factor of -4 is -12.
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GEOMETRY 9.3.5 POINT ON A CIRCLE ASSIGNMENT
RLLY NEED HELP
FULL DOCUMENT??
Suppose that this grid represents the customer’s yard. The bottom left corner is the origin point, (0, 0), and the x- and y- axes represent the two fences. The rose bush is at point (16, 18).
The area of the customer's yard is 580π.
What is distance formula?The distance formula is given as -
d = √(x₂ - x₁)² + (y₂ - y₁)²
Given is that this grid represents the customer’s yard. The bottom left corner is the origin point O(0, 0), and the x- and y- axes represent the two fences. The rose bush is at point P(16, 18).
We can write the area of the customer's yard -
A = πr²
Here -
r = d
r² = d²
We can write -
A = πd²
A = π {(x₂ - x₁)² + (y₂ - y₁)²}
A = π{16 x 16 + 18 x 18}
A = 580π
Therefore, the area of the customer's yard is 580π.
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Please help with this problem!
True. Testing other points in addition to the vertices is necessary
During optimization of a function, must you test other points in addition to the vertices?True. When trying to optimize (find the max or min) of a function, it is not enough to test only the vertices. The function may have a maximum or minimum value at a point that is not a vertex, such as an inflection point, or a point on the edge of the domain.
Thus, testing other points in addition to the vertices is necessary in order to ensure that the maximum or minimum value of the function has been found.
Linear programming is a powerful tool that can be used to model and solve a wide range of real-world problems in fields such as finance, manufacturing, transportation, and resource allocation.
For example, it can help to determine the optimal number of products to produce, the best way to use resources (e.g. labor, materials) and the best scheduling to minimize costs and maximize profits.
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please help
what are the areas of these figures ?
the area of the triangle is____cm^2
the area of the rectangle is___cm^2
The areas of the given triangle and rectangle are 60 cm² and 120 cm² respectively.
What are a triangle and rectangle?
A triangle is a three-sided polygon which has 3 angles formed when two sides join to form a vertex.
A rectangle is a four-sided polygon whose opposite sides have the same lengths and all sides are perpendicular to each other.
The given triangle is a right-angled triangle.
The area of a right-angled triangle is 1/2*b*h
where,
b= base of the triangle
h = height of the triangle
From the figure, b = 10 cm and h = 12 cm
Area of triangle = 1/2*10*12 = 60 cm²
The given rectangles have a length of 12 cm and a breadth of 10cm.
The area of the rectangle is given by the product of breadth and length.
Area of rectangle = 12 * 10 = 120 cm²
Therefore the areas of the given triangle and rectangle are 60 cm² and 120 cm² respectively.
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Penelope has a smart phone data plan that costs $35 per month that includes 9 GB of data, but will charge an extra $25 per GB over the included amount. How much would Penelope have to pay in a month where she used 5 GB over the limit? How much would Penelope have to pay in a month where she used went over by xx GB?
For the 5 GB and x GB over use of the data plan per month the total cost paid by Penelope is $160 and $(35 + 25x ).
Let 'x' represents the extra GB used by Penelope in his smart phone data plan.
Cost to used fixed 9 GB of data in a month is equal to $35
Extra charge per GB over the included amount for fixed 9 GB is $25
Equation represents the data plan relation is:
35 + 25x
When Penelope used 5 GB extra over the 9 GB data plan then ,
x = 5GB
Amount to be paid for extra 5 GB is
= 35 + 25( 5 )
= 35 + 125
= $ 160
Amount to be paid for extra 'x' GB is $(35 + 25x).
Therefore, the total cost for extra use of data plan per month is:
a. For 5 GB it is $160.
b. For x GB it is $(35 + 25x).
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Martha Burns invested $14,200 in an account that pays 6% interest compounded monthly. Find the future value and the interest she earned on her investment if she kept it for 8 years.
Answer: Martha earned $13,728.12 in interest over 8 years.
Step-by-step explanation:
The future value of Martha's investment can be calculated using the formula:
FV = PV (1 + r/n)^(nt)
Where:
PV = present value (initial investment) = $14,200
r = annual interest rate = 6%
n = number of times the interest is compounded per year = 12 (monthly)
t = number of years the investment is held = 8
Plugging in the values, we get:
FV = 14,200(1 + 0.06/12)^(12*8) = $27,928.12
The interest earned on her investment is the difference between the future value and the present value:
$27,928.12 - $14,200 = $13,728.12
So Martha earned $13,728.12 in interest over 8 years.
Answer:
$22,920.83
Step-by-step explanation:
assuming 6% is annual rate
so 12 months in a year = 6%/12 = 0.5% per month
so every month she gets (1+0.5%) growth on her previous balance
so for 8 years = 96 months,
she'll get that growth 96 times
so it'll be 14,200 *(1+0.5%) ^ 96 =22,920.83
The mad mathematician is trying to determine if you would be able to make it to the top of the building before he makes it to you. Set up a right triangle model for this problem and solve by using the trigonometric ratio that applies. The mad mathematician is standing on a ramp that is 60 yards in length. He observes you standing at the top of the building at an elevated angle of 41°. How tall is the building?
The building is 39.06 yards tall.
What is Trigonometry?The area of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).
Given:
Hypotenuse (ramp)= 60 yards
Angle of Elevation = 41°
Using Trigonometry
sin 41= P/H
0.651 = P/60
P= 39.06 yard.
Hence, the height is 39.06 yard.
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What is the domain of the function f(x) = -x +15?
O x ≤ 30
Ο x > -2
O all real numbers
O x >0
Answer: The domain of a function is the set of all input values (x-values) for which the function produces a valid output. In the case of the function f(x) = -x + 15, the function will take any real number as input and produce a corresponding output.
Therefore, the domain of the function f(x) = -x + 15 is all real numbers. This can be represented as (-∞, ∞) or simply as "all x".
Option O is correct: x are all real numbers
Option O x ≤ 30, O x > -2, O x >0 are incorrect
Step-by-step explanation:
if a fair penny is tossed three times and comes up heads all three times, the probability of heads on the fourth trial is . a. smaller than the probability of tails b. larger than the probability of tails c. .0625 d. .50
The probability of obtaining heads on fourth trial is 1/2
In a random experiment of tossing a penny, let H be the event of obtaining head and T be the event of obtaining tail
As it is a fair penny, the probability of obtaining head=1/2
The outcomes of the trials are independent when a coin is tossed multiple times.
Probability of getting three heads ,
P(3H)=P(H∩H∩H)
=P(H)xP(H)xP(H)
=1/2x1/2x1/2
=1/8
We will use conditional probability to find the probability of obtaining head in the fourth trial, given that three heads are already obtained in three trials
P(H|3H)=P(H∩3H)/P(3H)=(1/8x1/2)/(1/8)=1/2
Thus, the required probability is 1/2
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Your study of a function, g, has revealed the following information:
g(1) = 22
9 (3) = -5
g (5) = 6
Select all true statements.
When 1 is an input, 22 is an output
The point (-5, 3) lies on the graph of the function.
The solution to g(x) = -5 is x = 3.
When 6 is an input, 5 is an output.
The point (-5, 3) lies on the graph of the function.
The point, (5, 6) lies on the graph of the function.
All the given statements for the function g(x) is true.
What is a function?
In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.
For the function g(x) -
When the value of x = 1, then the value of y = 22.
When the value of x = 3, then the value of y = -5.
When the value of x = 5, then the value of y = 6.
When 1 is an input, 22 is an output.
The point (-5, 3) lies on the graph of the function.
The solution to g(x) = -5 is x = 3.
When 6 is an input, 5 is an output.
The point (-5, 3) lies on the graph of the function.
The point, (5, 6) lies on the graph of the function.
Therefore, all the statements are true.
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Find the value of x rounded to the nearest tenth.
Answer: 21.3
Step-by-step explanation: Let us split the figure into two triangles. If the total bottom length is 22, than the triangle's base is 22/2=11
We can use the Pythagorean theorem to get: 11^2+x^2=24^2 or 121+x^2=576
576-121=455
sqrt 455=21.33................
rounds to 21.3
Hello can someone kind help me with all my problems
There are 22 purple notebooks in the bin.
There are 37 pink socks in the bin.
How many copies have been sold to date?In order to determine the number of purple notebooks that are in the bin, we would develop an expression to multiply the total number of notebooks (T) by the percentage of the number of purple notebooks placed in the note bin as follows;
Total number of purple notebooks (P) = 25/100 × 88
Total number of purple notebooks (P) = 0.25 × 88
Total number of purple notebooks (P) = 22 notebooks.
Question 2.Total number of socks (S) = 50/100 × 74
Total number of socks (s) = 0.50 × 74
Total number of socks (s) = 37 socks.
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if yellow (y) color is dominant, and round (r) seed shape is dominant, what is the probability of getting a green wrinkled pea from a yyrr x yyrr cross?
The probability of getting a green wrinkled pea from a yyrr x yyrr cross is 1/4.
A cross was made between a pure round yellow seeded pea plant (RRYY) with wrinkled green seeded pea plant (rryy). The yellow colour is dominant over green and round seed shape is dominant over wrinkled seed shape.
The possibility of the result of any random event is known as probability. This phrase refers to determining the likelihood that any given occurrence will occur.
All of the children were yellow because yellow has a dominant gene over green. The green phenotype was no longer present. To see how the second generation would appear, let the yellow pea plants self-fertilize.
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The table represents a proportional relationship. Write an equation to represent the relationship.
An equation to represent the relationship is y=15x.
What is linear equation ?
Linear equation can be defined as the equation in which highest degree is one.
Given ,
The table represents a proportional relationship.
So we have to write an equation to represent the relationship
Given,
Time that is
x = {5,8,12 }
Distance that is
y = {75,120,180}
so here from the given table,
75 = 15*5
120 = 8*15
180 = 12*15
hence , it is in the form of y = 15x.
Therefore, An equation to represent the relationship is y=15x.
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On a separate piece of graph paper, graph y
1l; then click on the graph until the correct one appears.
Graph the equation y = x + 1l on a separate sheet of graph paper, and then click on the graph to make the right one appear. appears to be a house's roof. From the (0,0) line, it has moved forward one space.
Which graph does not represents a function?The graph of y equal to the value of x minus 3 is the one that needs to be chosen in this challenge. Since these 3 units will now be moved to the right, the vertex will no longer be at the origin, where it normally is. You should choose the graph that has a form similar to what I'm going to create when I move 3 to the right .
The graph cannot represent a function if a vertical line can cross it at two or more different locations. To put it another way, the graph is said to reflect a function if a vertical line drawn anywhere only intersects it once, indicating that each x value has a single corresponding y value.
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Isabel has ounces of almonds to divide equally into bags. In the last bag, she adds an additional ounces of almonds. The equation shown can be used to find , the total number of ounces of almonds in the last bag. How many ounces of almonds are in the last bag?
The equation shown below can be used to find, the total number of ounces of almonds in the last bag.
y = 8/2 + 1 And y = 5 ounces of almonds in the last bag.
What is an equation?
Two algebraic expressions having same value and symbol '=' in between are called as an equation.
Given:
Isabel has 8 ounces of almonds to divide equally into 2 bags
In the last bag, she adds an ounce of almonds.
The equation shown below can be used to find, the total number of ounces of almonds in the last bag.
y = 8/2 + 1
y = 4 + 1
y = 5 ounces of almonds in the last bag
Therefore, 5 ounces of almonds in the last bag
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The complete question:
Isabel has 8 ounces of almonds to divide equally into 2 bags. In the last bag, she adds an additional ounces of almonds. The equation shown can be used to find, the total number of ounces of almonds in the last bag. How many ounces of almonds are in the last bag?
The dosage of a certain medication is 1.5 ounces for every 50 pounds of body weight. Devon is 190 pounds and on this medication. If he loses 15 pounds, what will his new dosage be?
The dosage for Devon's body weight is 5.25 ounces.
Calculating the dosage of medication:Note that 50 pounds of body weight require 1.5 ounces of medication,
Here by dividing the given amount of medication by 50 find the amount of medication for 1 pound of body
Now multiply the result by the present body weight of the Devons.
Here we have
The dosage of the medication is 1.5 ounces for every 50 pounds
Weight of Devon = 190 pounds
If he loses 15 pounds, present Devon's weight = 190 - 15 = 175
Dosage for Devon's body = [tex]\frac{1.5}{50} \times 175[/tex]
= [tex]0.03 \times 175[/tex]
= 5.25
Therefore,
The dosage for Devon's body weight is 5.25 ounces.
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B51 Find the number of ten-letter combinations (allowing repetition) from the set A, B,C that contain: (a) at least one of each letter; (b) at least two of each letter; (c) at least one A, two Bs, and three Cs; (d) any number of each letter; (e) at least one A and at least two Bs
As per the combination method,
(a) at least one of each letter is 36
(b) at least two of each letter is 15
(c) at least one A, two Bs, and three Cs is 15
(d) any number of each letter is 120
(e) at least one A and at least two Bs is 36
In math the term combination method is known as the number of possible combinations that can be obtained by taking a sample of items from a larger set.
Here we have given that the value of n is 10 and the value of r is 3.
Then the resulting values are calculated as,
Here for the letters with at least one of each letter then the length is 10 with a 3 elements to choose from the given set.
Here we know that 3 of the 10 slots will be taken up by A,B, and C. With 7 remaining, any letter could take up those spots it will be calculated as,
=> (7+3-1 choose 3-1)
=> (9 choose 2).
=> 36
Where as the other one is with at least two of each letter
Then here we have the letter with two of each letter 6 letters will take up 10 slots no matter what is calculated as,
=> 10-6 = 4
Now then we have 3 to choose from so (4 + 3 - 1 choose 3-1).
=> (6 choose 2)
=> 15
And the another option is to have at least one A, two Bs, and three Cs
=> 1A + 2B + 3C will take up 6 spots.
=> (4+ 3-1 choose 3-1)
=> (6 choose 2).
=> 15
Where as the count is any number of each letter
=> 10 choose 3.
=> 120
Finally if we take at least one A and at least two Bs
Then at least 1 A and two Bs taking up a total of 3 slots is calculated as,
=> 10 - 3 = 7.
=> (7 + 3 - 1 choose 3 - 1)
=> (9 choose 2) = 36
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Select the correct answer. Which value of x makes this equation true?-12x-2(x+9)=5(x+4)
Answer: X= - 2
Step-by-step explanation:
Determine the monthly payment of a $4,500 loan at 12% interest for 48 months.
The monthly payment on a loan of $4,500 at 12% interest for a period of 48 months is: $128.34.
How to Calculate the Monthly Payment on a Loan?The monthly payment for a $4,500 loan at 12% interest for 48 months can be calculated using the formula:
M = P * (r(1 + r)^n) / ((1 + r)^n - 1)
Where:
M = the monthly payment
P = the principal (the amount of the loan)
r = the monthly interest rate (12% divided by 12 months)
n = the number of payments (48 months)
So the calculation is:
M = 4,500 * (0.01(1 + 0.01)^48) / ((1 + 0.01)^48 - 1)
This comes out to be $128.34.
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Which functions show a negative rate of change?
Answer:
C & D
Step-by-step explanation:
The key formula will be y = mx + b
y = the function
m = slope
b = y - intercept
Another term for slope is rate of change
They asked for negative rare of change, so negative slope, which takes it to
y = -mx + b
The only two that work are C & D because C shows -4x and D shows -2x, both negative.
A & B are 7x and 2/3x, both positive.
HELP PLEASEEEEE
4.6.3 Quiz: Transformation of Parent Functions
Question 2 of 10
If you apply the changes below to the cubic parent function, F(x) = x³, what is
the equation of the new function?
• Reflect across the x-axis.
Vertically compress by multiplying by
A. H(X)-(2x)
B. G(x)=(2x)³
C. (x)--²
D. K(x)--2x²
The equation of the new function is f'(x) = -1/2x³
How to determine the new functionFrom the question, we have the following parameters that can be used in our computation:
F(x) = x³
The transformations are given as
Reflect across the x-axis.Vertically compress by multiplying by 1/2The rule of the above transformations is
f'(x) = -1/2f(x)
substitute the known values in the above equation, so, we have the following representation
f'(x) = -1/2x³
hence, the equation is f'(x) = -1/2x³
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If you have a different linear equation such as y = 1 2 x + 4 , the slope and y intercept would be which of the following? Question 5 options: slope: 2 y-intercept: 4 slope: 4 y-intercept: 1 2 slope: - 1 2 y-intercept: 4 slope: 1 2 y-intercept: 4
The slope of the line is 1/2 and the y-intercept is 4. Then the correct option is D.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
If you have a different linear equation such as y = (1/2) x + 4. Then the slope and y-intercept of the line are given as,
m = 1/2
y = 4
The slope of the line is 1/2 and the y-intercept is 4. Then the correct option is D.
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Suppose the demand for a product can
expressed as p(x)=0.2x² +1.13x+5.2
where x is given in units of a thousand.
A. Find the average rate of change of
demand when the number of items
demanded increases from 2 thousand
units to 4 thousand units.
B. Find the average rate of change of
demand when the number of items
demanded increases from 1 thousand
units to 5 thousand units.
The average rate of change of demand when the number of items demanded increases from 2 thousand units to 4 thousand units is 401.13 and if it increase from 1 thousand units to 5 thousand units is 201.13
What is Algebraic expression ?
Algebraic expression can be defined as the combination of variables and constants.
Given,
The expression, p(x) = 0.2 x^2 + 1.13x+5.2
where x is given in units of a thousand .
The average rate of change of demand when the number of items demanded increases from 2 thousand units to 4 thousand units.
p(x) = 0.2x^2 + 1.13x+5.2
p(2000 ) = 0.2 (2000*2000) + 1.13 (2000) + 5.2
= 800000 + 2260 + 5.2
= 802265.2
p(4000 ) = 0.2 (4000*4000 ) + 1.13 (4000) + 5.2
= 1600000 + 4520 + 5.2
= 1604525.2
p(2000) - p (4000) / 2000-4000 = 802265.2 - 1604525.2 / -2000
= -8,02,260 / -2000
= 401.13
p (1000) = 0.2 (1000*1000) + 1.13 (1000) + 5.2
= 200000 + 1130 + 5.2
= 201135.2
p (5000 ) = 0.2 (5000*5000) + 1.13(5000) + 5.2
= 1000000 + 5650 + 5.2
= 1005655.2
p (1000) - p (5000) / 1000 - 5000 = 201135.2 - 1005655.2 / -4000
= 804520 / 4000
= 201.13
Hence, The average rate of change of demand when the number of items demanded increases from 2 thousand units to 4 thousand units is 401.13 and if it increase from 1 thousand units to 5 thousand units is 201.13.
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a city's population is currently 538,000. if the population doubles every 6 years, what will the population be 12 years from now?
If a city's population doubles every 6 years, the city's population, 12 years from now, will be 2,152,000.
How is the population determined?Every six months, the population increases by two times the current number.
Using multiplication by 2 or 4, we can determine the population in 12 years.
The current population of the city in Year 0 = 538,000
Doubling time = every 6 years
The estimated time = 12 years
In the first six years, the population will be 1,076,000 (538,000 x 2)
In the second six years, the number of people in the city will be 2,152,000 (1,076,000 x 2) or (538,000 x 4)
Thus, in 12 years, the city's population will become 2,152,000 people.
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Answer:
2,152,000
Step-by-step explanation:
The points B(-9,1), C(-4,-1), D(-2,4)B(−9,1),C(−4,−1),D(−2,4), and E(-7,7)E(−7,7) form quadrilateral BCDE. Plot the points then click the "Graph Quadrilateral" button.
All the correct expressions are,
Slope of BC = - 2/5
Slope of CD = 5/2
Slope of DE = - 3/5
Slope of EB = 3
Length of BC = √ 29
Length of CD = √ 29
Length of DE = √34
Length of EB = √40
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
Coordinate of B = (- 9, 1)
Coordinate of C = (- 4, - 1)
Coordinate of D = (- 2, 4)
Coordinate of E = (- 7, 7)
Now, We know that;
The slope of line passing through the points (x₁ , y₁) and (x₂, y₂) is,
⇒ m = (y₂ - y₁) / (x₂ - x₁)
Thus, Slope of BC is,
⇒ m = (- 1 - 1) / (- 4 - (-9))
⇒ m = - 2/5
Slope of CD is,
⇒ m = (4 - (-1)) / (- 2 - (-4))
⇒ m = 5/2
Slope of DE is,
⇒ m = (7 - 4) / (- 7 - (-2))
⇒ m = 3/- 5
⇒ m = - 3/5
Slope of EB is,
⇒ m = (1 - 7) / (- 9 - (-7))
⇒ m = - 6/-2
⇒ m = 3
Length of CD is,
⇒ CD = √ (- 2 - (-4))² + (4 - (- 1))²
= √4 + 25
= √ 29
Length of BC is,
⇒ BC = √ (- 4 - (-9))² + (- 1 - 1)²
= √25 + 4
= √ 29
Length of DE is,
⇒ DE = √ (- 2 - (-7))² + (4 - 7)²
= √25 + 9
= √ 34
Length of EB is,
⇒ EB = √ (- 7 - (-9))² + (7 - 1)²
= √4 + 36
= √ 40
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Frank owes $212 on his credit card. Then, he charges $105 more. What is the new balance on Frank's credit card? Write your answer as an integer.
Answer: Frank owes $212 on his credit card and then charges $105 more, so the new balance on Frank's credit card is:
$212 + $105 = $317
So the new balance on Frank's credit card is $317.
Step-by-step explanation:
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The average number of burgers per person is 96
What are functions?Function, in mathematics, is an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given here; The function f(d) =200d³+542d²+179d+1605
The number of visitors is given by g(d)=100d+321
Thus in 7 days, The total number of burgers sold are given by
f(7)=200×7³+542×7²+179×7+1605
=68600+26558+1253+1605
=98016
And the number of visitors is given by g(7)=100×7+321
=1021
Thus, The average number of burgers per person is given by
Avg= 98016/1021
=96
Hence, The average number of burgers per person is 96
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help Choose Yes or No to tell if the operation will give an equivalent ratio for 8/
20
.
.
a) Does not give an equivalent ratio
b) Does not give an equivalent ratio
c) Does not give an equivalent ratio
d) Gives an equivalent ratio
What is the equivalent ratio?An equivalent ratio is a ratio that is equal in value to a given ratio, but may have a different form. Two ratios are equivalent if they have the same relationship between the terms, even if the numbers are different.
In this case, we have the ratio 8/20. The process of addition or subtraction can not be able to give us the equivalent ratio that we are looking for but the multiplication would do that. Recall that the original fraction is 8/20 so;
a) 10/22 = 5/11
b) 6/18 = 3/9
c) 4/10 = 2/5
d) 16/40 = 8/20
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