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3 years ago

Converting y-2=-3(x-4)

1 answer:

5 0

Get this equation into y=mx+b form.
y-2=-3(x-4)
y-2=-3x+12
y=-3x+12+2
y=-3x+14
Hope this helps!
And just a note, this is provided in point-slope formula, meaning there is a point on the line, (4,2), based on the initial equation.

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What is an equation for the line parallel to y = -x + 7 that passes through (7,-2)?

gtnhenbr [62]

Answer:

y = -x + 5

Step-by-step explanation:

Parallel line has same slope with the given, so the line is

y = -x + b

Using the given point, finding the value of b

-2 = -7 + b
b = 7 - 2
b = 5

The equation is

y = -x + 5

8 0

3 years ago

PLZZZ HELLP I'LL GIVE YOU POINTS AND MARK YOU AS BRAINLIEST

yanalaym [24]

You plug 11 in where x is.
r(11) = (11 + 1)(11 - 3)
= (12)(8)
= 96

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3 years ago

An election ballot asks voters to select three city commissioners from a group of six candidates, in how many ways can this be d

slava [35]

20 possibilities based on this as a combination not a permutation, 6 nCr 3 = 20

6 0

3 years ago

Part A. Dario purchased a party size sub, and he decides to share it with three of his friends. so he cuts the sub into four equ

wel

Answer: 4/6 = 2/32/3 = 2/3

Step-by-step explanation: hope this help

3 0

3 years ago

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

2 years ago