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3 years ago

Which of the set of ordered pairs contains the line 1/3 x+y= 15.

Mathematics

2 answers:

Simora [160]3 years ago

7 0

Answer:

Step-by-step explanation:

because my calculator came up with the ordered the ordered pares (-3,16),(0,15),and (3,14)

If brainiest is earned its greatly appreciated.

Dima020 [189]3 years ago

5 0

Answer: c

Step-by-step explanation:

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A plumber has a set fee for a house call and charges by the hour for repairs. The total cost of her services can be modeled by c

Lostsunrise [7]

Answer:

1, 2 and 3

Step-by-step explanation:

Let

t -----> the number of hours the job takes

C(t) -----> the total cost for the service

we have

$C(t)=125t+95$

This is the equation of a line in slope intercept form

where

The slope m is equal to $m=125\ \frac{\$}{h}$

The y-intercept is the point (0,95) ---> The cost is $95 for the value of t equal zero (fee)

therefore

<u><em>The statements that are true</em></u>

1 a house call fee costs $95

2 the plumber charges $125 per hour

3 the number of hours the job takes is represented by t

4 0

3 years ago

A repeated-measures study comparing two treatments with n = 4 participants produces md = 2 and ss = 75 for the difference scores

valentinak56 [21]

The estimated standard error for the sample mean difference is 2.5 .

According to the question

A repeated-measures study comparing two treatments

n = 4

MD(mean difference) = 2

SS (sum of square) = 75

Now,

error for the sample

Formula for standard error

$S^{2} = \frac{SS}{n-1}$

by substituting the value

$S^{2} = \frac{75}{4-1}$

$S^{2} = \frac{75}{3}$

S² = 25

S = 5 (s is never negative)

Standard error of the estimate for the sample mean difference

The standard error of the estimate is the estimation of the accuracy of any predictions.

The formula for standard error of the mean difference

standard error of the mean difference = $\frac{standard\\\ error}{\sqrt{n} }$

standard error of the mean difference = $\frac{5}{\sqrt{4} }$

standard error of the mean difference = 2.5

Hence, the estimated standard error for the sample mean difference is 2.5 .

To know more about estimated standard error here:

brainly.com/question/14524236

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5 0

1 year ago

A toy that originally sold for 12 dollars went of sale for 8 dollars what was the percent discount? Remember to show your work!

harkovskaia [24]

12———-100%
8 ———— x
X=(8*100)/12=800/12=66.66%
Then discount percent is 100-66.66=33.33%

3 0

2 years ago

Solve for p: 5p+7c=2p

Debora [2.8K]

5p+7c=2p
5p=2p-7c
7p=-7c
p=-c
hope it helped

7 0

3 years ago

HURRY QUICK!!

antiseptic1488 [7]

After plotting all the three points, we get the parabolic equation in the form is 2(x - 1)²-34.

<h3>What is parabola?</h3>

Any point on a parabola, which has the shape of a U, is situated at an equal distance from the focus, a fixed point, and the directrix, a fixed line.

General equation of the quadratic equation,

Y = ax² + bx +c

Given points,

(-2, 0),

(-1, -10),

(4, 0).

Putting the points in the general equation,

Putting (-2, 0), we get

0 = 4a - 2b + c

Putting (-1, -10), we get

-10 = a - b +c

Putting (4, 0), we get

0 = 16a + 4b +c

Solving all equations we get,

a = 2 , b = -4 , c = -16

After putting the values,

Y = 2x²- 4x- 16

2(x² - 2x - 8)

2(x²- 2x + 1 - 1 - 16)

=2(x - 1)²-34

Hence we get the required equation in the parabolic form.

To know more about parabola, visit :

brainly.com/question/21685473

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5 0

1 year ago