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2 years ago

Multiply. (v-3)(v+7) Simplify your answer.

Mathematics

1 answer:

Tema [17]2 years ago

4 0

Answer:

$v^{2}$ + 4v - 21

Step-by-step explanation:

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The cost of a week long vacation in a city has a mean of 1000 and a variance of 1200. The city imposes a tax which will raise al

matrenka [14]

Answer:

The coefficient of variation after the tax is imposed is 0.033

Step-by-step explanation:

Given

$\mu =1000$ --- mean

$\sigma^2 = 1200$ --- variance

$tax = 10\%$

Required

The coefficient of variation

The coefficient of variation is calculated using:

$CV = \frac{\sqrt{\sigma^2}}{\mu}$

After the tax, the new mean is:

$\mu_{new} = \mu * (1 + tax)$

$\mu_{new} = 1000 * (1 + 10\%)$

$\mu_{new} = 1100$

And the new variance is:

$\sigma^2_{new} = \sigma^2 * (1 + tax)$

$\sigma^2_{new} = 1200 * (1 + 10\%)$

$\sigma^2_{new} = 1320$

So, we have:

$CV = \frac{\sqrt{\sigma^2}}{\mu}$

$CV = \frac{\sqrt{1320}}{1100}$

$CV = \frac{36.33}{1100}$

$CV = 0.033$

6 0

2 years ago

What is the slope of the line?

damaskus [11]

Answer:

- 7/4

Step-by-step explanation:

1) (y2 - y1)/(x2 - x1)

2) pick two points, mine were (1,-3) and (-3,4)

3) Substitute the values (4+3)/(-3-1)

4) Solve and no matter what points you’ll get -7/4

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2 years ago

96 plus what equals 180?

Alisiya [41]

Answer:

Step-by-step explanation:

180-96

180-96 = 84

96 + 84 = 180

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3 years ago

Read 2 more answers

In 2012, New York had a population of about 19 million people,

alexandr1967 [171]

Answer:

B(if the option is 10^7 instead of 107

Step-by-step explanation:

no. of people in New York=19000000

no. of people in Vermont =626,000

difference in populations = 19000000-626,000 =18374000

therefore, the difference in populations is 18374000

(which can also be written as 1.8374x10^7)

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2 years ago

Beyonce is solving a system of equations: 2x – 3y = -2

andrezito [222]

Answer:

Step-by-step explanation:

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2 years ago