Answer:
24
Step-by-step explanation:
Answer:
-21
Step-by-step explanation:
-25+ 2²
evaluate -5²
evaluate -2²
subtract
1. What is the measure of the angle?
A) -280°
B) -260°
C) 110°
D) 80°
Step-by-step explanation:
the x and y-axis are always perpendicular to each other. Meaning that the angle between the x an y-axis is always 90 deg
the angle here shows that it starts on the x-axis in quadrant 1 and goes counterclockwise to the y-axis
since it doesnt go beyond the first quadrant, it means that it must be less than 90 deg
so it must be 80 deg
Plz ASAP help with question 15 I really need help
Which of the following coordinates are not correctly named based on the image?
(4, 2)
All of the coordinates are correct
(-2, 0)
(6, -2)
Answer:
Hi, there the answer is (4,2)
Step-by-step explanation:
The reason is that 4 is the y-axis and 2 is the x-axis and
the rule is x is first then y
The correct format for writing this it is supposed to be (2,4).
Therefore, your answer will (4,2)
Answer:
(4, 2)
Step-by-step explanation:
The correct coordinates should be (2, 4).
Anne, Barry, and Cathy enter a coffee shop. Anne orders two coffees, one juice, and two doughnuts and pays $7.50. Barry orders one coffee and three doughnuts and pays $5.00. Cathy orders three coffees, one juice, and four doughnuts and pays $11.50. Find the price of coffee, juice, and doughnuts at this coffee shop.
Answer:
Coffee = $2.00
Juice = $1.50
Doughnut = $1.00
Step-by-step explanation:
Given
Let:
[tex]c = coffee\\ j= juice\\ d = doughnut[/tex]
So, we have:
Anna
[tex]2c + j + 2d = 7.50[/tex]
Barry
[tex]c + 3d = 5.00[/tex]
Cathy
[tex]3c + j + 4d = 11.50[/tex]
Required
The price of each
We have:
[tex]2c + j + 2d = 7.50[/tex]
[tex]c + 3d = 5.00[/tex]
[tex]3c + j + 4d = 11.50[/tex]
Make c the subject in: [tex]c + 3d = 5.00[/tex]
[tex]c = 5.00 - 3d[/tex]
Substitute [tex]c = 5.00 - 3d[/tex] in [tex]2c + j + 2d = 7.50[/tex] and [tex]3c + j + 4d = 11.50[/tex]
[tex]2c + j + 2d = 7.50[/tex]
[tex]2[5.00 - 3d] + j + 2d = 7.50[/tex]
[tex]10.00 - 6d+ j + 2d = 7.50[/tex]
Make j the subject
[tex]j = 7.50 - 10.0 +6d - 2d[/tex]
[tex]j = -2.50 +4d[/tex]
[tex]3c + j + 4d = 11.50[/tex]
[tex]3[5.00 - 3d] + j + 4d = 11.50[/tex]
[tex]15.00 - 9d + j + 4d = 11.50[/tex]
Make j the subject
[tex]j = 11.50 - 15.00 + 9d -4d[/tex]
[tex]j = -3.50 + 5d[/tex]
So, we have:
[tex]j = -3.50 + 5d[/tex] and [tex]j = -2.50 +4d[/tex]
Equate both values of j
[tex]-3.50 + 5d = -2.50 + 4d[/tex]
Collect like terms
[tex]5d - 4d = 3.50 -2.50[/tex]
[tex]d = 1.00[/tex]
Substitute [tex]d = 1.00[/tex] in [tex]j = -3.50 + 5d[/tex]
[tex]j = -3.50 + 5d[/tex]
[tex]j = -3.50 + 5 * 1.00[/tex]
[tex]j = -3.50 + 5.00[/tex]
[tex]j = 1.50[/tex]
To solve for c, we substitute [tex]d = 1.00[/tex] in [tex]c + 3d = 5.00[/tex]
[tex]c + 3 * 1.00 =5.00[/tex]
[tex]c + 3.00 =5.00[/tex]
Solve for c
[tex]c =- 3.00 +5.00[/tex]
[tex]c =2.00[/tex]
Identify the volume of the hemisphere in terms of π.
The figure shows a hemisphere. The hemisphere has a radius of nine centimeters.
V = 729π cm3
V = 121.5π cm3
V = 486π cm3
V = 364.5π cm3
Answer:
Solution given:
radius [r]= 9cm
volume of hemisphere =2/3 ×(πr³)=2/3×π×9³
=486πcm³ is your answer
Dilations… please help I will give you brainless
Answer:
The scale factor is 0.5
Step-by-step explanation:
Divide.
2/1=2
4/2=2
4/2=2
8/4=2
2/1=2
5/1.25=2
Now then, since this is a shrinking factor, divide 1 by the common outcome from the last section (2) to get 0.5
1.
A diagram of Ryan's yard is shown.
-12 ft
10 ft
14 ft
5 ft
Which expression can Ryan use to find the total
area of his yard?
A. (10+4)(12+5)
B
(10 + 4) X (12 - 5)
C. (12 x 10) - (5 x 4)
D. (12 x 10) + (5 x 4)
Answer:
D. (12 x 10) + (5 x 4)
Step-by-step explanation:
If you draw a line separating the big square from the little square, you have a 12 x 10 large square, and a 5 x 4 smaller square. We know the second dimension of the small square because the large square takes 10ft off of the total length of 4ft.
Calculate both areas separately, then add them together.
If the expression below has a positive value, which inequality represents all possible values of x in the expression? -3x
Answer:
x < 0
Explanation:
A negative times a negative equals a positive, and the expression is positive, so x has to be negative/less than 0
I know you already got the answer, but one of the links was deleted so I thought I'd post it as an answer instead of a comment :)
Easton is deciding between two landscaping companies for his place of business.
Company A charges $25 per hour and a $150 equipment fee. Com piny B charges $35
per hour and a $100 equipment fee. Let A represent the amount Company A would
charge for t hours of landscaping, and let B represent the amount Company B would
charge fort hours of landscaping. Write an equation for each situation, in terms oft,
and determine the number hours, t, that would make the cost of each company the
same.
Answer:
i. A = $25 t + $150
ii. B = $35 t + $100
iii. Number of hours = 5
Step-by-step explanation:
For company A:
A = $25 t + $150
where A is the amount charged and t is the number of hours of landscaping.
For company B:
B = $35 t + $100
where B is the amount charged and t is the number of hours of landscaping.
When the time is 5 hours, then:
i. A = $25 t + $150
= $25 (5) + $150
= $125 + $150
A = $275
ii. B = $35 t + $100
= $35(5) + $100
= $175 + $100
B = $275
Therefore, the number of hours that would make the cost of each company to be the same is 5 hours.
What are characteristics of a translation in math?
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 18 2 15 35 Female 20 12 19 51 Total 38 14 34 86 If one student is chosen at random, Find the probability that the student did NOT get an "B"
Answer:
If we are choosing students at random from all students who got a B:
Total number of non-female students who got a B: 19
Total number of students who got a B: 36
Probability: 19/36
If we are choosing students at random from all students:
Total number of non-female students who got a B: 19
Total number of students: 78
Probability: 19/78
Find the value of x.
a company has developed a new type of light bulb, and wants to estimate its mean lifetime. a simple random sample of 12 bulbs had a sample mean lifetime of 614 hours with a sample standard deviation of 59 hours. it is reasonable to believe that the population is approximately normal. find the lower bound of the 95% confidence interval for the population mean lifetime of all bulbs manufactured by this new process.
Answer:
CI (95%)lb = 576,51
Step-by-step explanation:
Sample Information:
sample size n = 12
sample mean x = 614 h
sample standard deviation s = 59 h
Population with normal distribution, sample size n < 30 in order to find out CI 95% significance level is α = 5 % α = 0,05 α/2 = 0,025
t(c) for α/2 = 0,025 and degree of freedom df = n - 1 df = 12 - 1
df = 11 is:
t(c) = 2,201
CI = x ± t(c) * s / √n
CI (95%) = 614 ± 2,201 * 59 / √12
CI (95%)lb = 614 - 37,49
CI (95%)lb = 576,51
Probability distribution
Answer:
a) The value of q is 0.2.
b) E(X) = 1.85.
Step-by-step explanation:
Question a:
The sum of all the probabilities must be 1. So
[tex]0.3 + x + 0.1 + 0.15 + 0.25 = 1[/tex]
[tex]x + 0.8 = 1[/tex]
[tex]x = 0.2[/tex]
The value of q is 0.2.
Question b:
Multiplication of each value of x by its probability. So
[tex]E(X) = 0*0.3 + 1*0.2 + 2*0.1 + 3*0.15 + 4*0.25 = 1.85[/tex]
So the answer is E(X) = 1.85.
A population has a standard deviation of 24. What is the standard error of the sampling distribution if the sample size is 100?
A. 0.48
B. 4.8
C. 0.24
D. 2.4
Answer:
D. 2.4.
Step-by-step explanation:
S.E. = std dev / √N
= 24 / √100
= 2.4.
The standard error of the sampling distribution will be 2.4. Then the correct option is D.
The standard deviation of a statistic's sample distribution, or an approximation of that standard deviation, constitutes the statistic's measurement error (SE).
SE = σ / √n
A population has a standard deviation of 24. Then the standard error of the sampling distribution, if the sample size is 100, is calculated as,
SE = σ / √n
SE = 24 / √100
SE = 24 / 10
SE = 2.4
The standard error of the sampling distribution will be 2.4. Then the correct option is D.
More about the standard error link is given below.
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Find an equation in standard form for the ellipse with the vertical major axis of length 16 and minor axis of length 10.
Answer:
The first option.
Step-by-step explanation:
You take the major vertical length and put it into this equation:
2a = 16
a/2 = 16/2
a = 8
You do the same with the minor length.
2b = 10
b/2 = 10/2
b = 5
You then switch the a^2 and the b^2 due to the fact that the veritcal length is longer than the horizontal. Then you use the formula to plug in 8 and 5.
(x - h)^2 / b^2 + (y - k)^2 / a^2 = 1
(x - h)^2 / 5^2 + (y - k)^2 / 8^2 = 1
I will give Brainiest if you are right
The answer is J. When the circle on the graph is filled in, that means that number is included in the solution.
25x </= 300
Divide both sides by 25
x </= 12
Answer: J
Number line J. beast represents the solution to the inequality.
Step-by-step explanation:
Have a nice day!
Give the other person brainliest! :-)
What is the greatest common factor (GCF) of 72 and 44? A. 4 B. 3 C. 2 D. 1
Answer:
A. 4
Step-by-step explanation:
72 = 2 * 2 * 2 * 3 * 3
44 = 2 * 2 * 11
GCF = 2 * 2
GCF = 4
Answer:
444444444444444
Step-by-step explanation:
A 52 foot ladder is set against the side of the house so that it reaches up 48 feet .if jevonte grabs the ladder at its base and pulls it 3 feet farther from the house ,how far up the side of the house will the ladder reach now ? (The answer is not 45ft) round to the nearest tenth of a foot
Please help my daughter is stuck and I can't figure it out thanks
Answer:
Step-by-step explanation:
The way to approach this that makes the most sense to a student would be to find out how far from the house the ladder currently is, then add 3 feet to that and do the problem all over again. This is right triangle stuff...Pythagorean's Theorem in particular. The ladder is the hypotenuse, 52 feet long. The height of the rectangle is the distance the ladder is up the side o the house, 48 feet. We plug those into Pythagorean's Theorem and solve for the distance the ladder is from the house:
[tex]52^2=48^2+x^2[/tex] and
[tex]2704=2304+x^2[/tex] and
[tex]x^2=400[/tex] so
x = 20. Now if we add the 3 feet that the ladder was pulled away from house, the distance from the base of the ladder to the house is 23 feet, the ladder is still 52 feet long, but what's different is the height of the ladder up the side of the house, our new x:
[tex]52^2=23^2+x^2[/tex] and
[tex]2704=529+x^2[/tex] and
[tex]2175=x^2[/tex] so
x = 46.6 feet
Use substitution. What is the solution to the system of equations? Use the drop-down menus to explain your answer.
y = 12x + 2
2y = x + 4
choose
The system of equations has no solution,infinitely many solutions, one solution The two equations represent parallel lines, the same lines, intersecting lines.
Answer:
The system of equations has one solution. The two equations are intersecting lines.
Step-by-step explanation:
if you want to use the substitution method, you would have to plug in y for 12x+2 in the second equation.
2(12x+2)=x+4
next, you have to distribute
24x+4=x+4
subtract 24x from each side
4=-23x+4
subtract 4 from each side
0=23x
divide each side by 23
x=0
now, plug in 0 to one equation.
y=12(0)+2
y=2
the lines intersect at one point, (0,2)
isaac invested $77,000 in an account paying interest rate of 4.6% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to the nearest cent, would be the count after 12 years?
Answer:
$133,728 would be in the count after 12 hours.
Step-by-step explanation:
Continuous compounding:
The amount of money, in continuous compounding, after t years, is given by:
[tex]P(t) = P(0)e^{rt}[/tex]
In which P(0) is the initial deposit and r is the interest rate, as a decimal.
Isaac invested $77,000 in an account paying interest rate of 4.6% compounded continuously.
This means that [tex]P(0) = 77000, r = 0.046[/tex]
Assuming no deposits or withdrawals are made, how much money, to the nearest cent, would be the count after 12 years?
This is P(12). So
[tex]P(t) = P(0)e^{rt}[/tex]
[tex]P(12) = 77000e^{0.046*12} = 133728[/tex]
$133,728 would be in the count after 12 hours.
Hi can someone answer this question please
Which number line represents the solution to the inequality -7x - 13 ≥ 87
Answer:
x ≤ - 3
Option A
Step-by-step explanation:
Given the inequality :
-7x - 13 ≥ 8
Add 13 to both. Sides
-7x - 13 + 13 ≥ 8 + 13
-7x ≥ 21
Divide both sides by -7
x ≤ - 3
math question pls help asap thxxu
question is in pic
Step-by-step explanation:
you use a cah method which mean to get the angle you divide the adjacent length by hypotenuse and then find the CAH inverse using your calculator to get the angle
Find the complete factored form of the
polynomial:
- m2n5 - 4m3n6
Enter the correct answer.
Answer:
-m^2n^5(1+4mn)
Use a ratio box to solve this problem. The price of one model of car increased 10 percent in one year. If the price this year is $17,600,
what was the price last year
Answer:
$15,840
Step-by-step explanation:
10% of 17600 = 1760
17600 - 1760 = 15840
Information collected about objects, places, and people is called
Answer:
Data
Step-by-step explanation:
Questlon 2 of 10 Which distribution is positively skewed? will give brainliest
Answer:
The answer is B
Step-by-step explanation:
please help :((
Use the zeros and the labeled point to write the quadratic function represented by the graph. (1.4)
A. y= x2 - 5x + 6
B. y = 2x2 - 2x - 12
C. y = 2x2 - 10x + 12
D. y = 3x2 + 15x + 18
The quadratic function represented by the graph as given in the attached image is; Choice C; y = 2x² - 10x + 12.
What is the quadratic function represented by the graph?It follows from the task content that the quadratic function which is represented by the graph be determined.
Since the quadratic function can be modelled as follows; y = a (x - p) (x -q) where; a is a constant, and p and q are the roots of the quadratic function.
Hence, since it follows that the roots are 2 and 3; we have;
y = a (x - 2) (x -3)
Hence, to determine the value of constant, a, we must substitute the values defined by the point given; (1, 4) as follows;
4 = a (1 -2) (1 -3)
4 = a(-1) (-2)
4 = 2a
a = 2.
On this note, the required equation is; y = 2 (x - 2) (x - 3).
Ultimately, the required quadratic function is; Choice C; y = 2x² - 10x + 12.
Read more on quadratic functions;
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Please help I would be really happy:)
Yolanda is planning out her square vegetable garden, One side 6 feet. How
can I represent the area with exponents?
Answer:
6^2
Step-by-step explanation:
A square has equal sides. The area of a rectangle or square is LxW. Since the length and width are the same it is squared or put to the power (exponent) of 2.