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3 years ago

Identify an equation in slope-intercept form for the line parallel to y=-3x+7

Mathematics

1 answer:

Anit [1.1K]3 years ago

3 0

Answer:

y + 4 = -3(x -2)

Step-by-step explanation:

A line parallel to y = -3x + 7 also has a slope of -3.

Use the point-slope formula:

y - k = m(x - h)

Inserting the given info, we get:

y + 4 = -3(x -2)

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3 years ago

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4 years ago

A bus leaves Dhaka on Saturday night and is supposed to arrive at Cox’s Bazar at 08 17

guajiro [1.7K]

Answer:

9:34 pm

Step-by-step explanation:

First:

8:17 am

Go back 12 hours

8:17 pm

Round to 8:20

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3 years ago

9. What is the likelihood that a randomly selected couple's relationship survived between 90 and 150 days

andrew-mc [135]

Answer:

0.5818

Step-by-step explanation:

Suppose the average teenage romantic relationship is normally distributed with a mean number of 100 days with a standard deviation of 30 days.

Answer:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}\\ \\where\ \mu=mean,\sigma=standard\ deviation, x=raw\ score$

Given that:

$\mu=100\ days,\sigma=30\ days\\\\For\ x=90\\\\z=\frac{90-100}{30} =-0.33\\\\For\ x=150\\\\z=\frac{150-100}{30} =1.67$

Therefore, from the normal distribution table, P(90 < x < 150) = P(-0.33 < z < 1.67) = P(z < 1.67) - P(z < -0.33) = 0.9525 - 0.3707 = 0.5818

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3 years ago

Find the maximum value of the function <br><img src="https://tex.z-dn.net/?f=%20-%208%20%2B%202x%20-%204x%20%5E%7B2%7D%20" id="T

Mkey [24]

Answer:

x = $\frac{-b}{2a}$

Step-by-step explanation:

Start by using P.E.M.D.A.S.

-8 is a 2x is b and -4 $x^{2}$ is c.

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4 years ago