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2 years ago

You are a supervisor for a home cleaning business,

Mathematics

1 answer:

irinina [24]2 years ago

8 0

Answer:

option a

Step-by-step explanation:

i think this because my teacher in my business class stated this before to the whole class but I was distracted so it can totally be wrong if it is my bad

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Find the equation of the line with slope −2 which goes through the point (9,−7).

goldenfox [79]

Answer:

Here,

slope (m)=-2

y- intercept (c)=-7

Now,

The equation of the line;

or,y=mx+c

or,y= -2x-7

or,2x+y+7=0 is the required equation....

6 0

3 years ago

Read 2 more answers

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 100 hou

hodyreva [135]

Answer:

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

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

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.645*\frac{600}{\sqrt{100}} = 98.7$

The lower end of the interval is the sample mean subtracted by M. So it is 4500 - 98.7 = 4401.3 gallons

The upper end of the interval is the sample mean added to M. So it is 4500 + 98.7 = 4598.7 gallons

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

4 0

3 years ago

The population of Colorado is more than 5 x 106 people, while the population of the United States is more than 3 x 108 people. W

densk [106]

Answer:

it's d

Step-by-step explanation:

because there is about x170 more people then 108 in both u.s. and Colorado

7 0

3 years ago

Bryan has a square parcel of land that is 120 yards long and 120 yards wide. The land is planted with Bermuda grass and surround

bagirrra123 [75]

Diagonal = s * sqrt 2.....with s(side) being 120 yds
diagonal = 120 * sqrt 2 = 169.7 yds rounds to 170 yds....or if u need it in feet, it is (3 * 170) = 510 ft.

7 0

3 years ago

What is 5/20 as a percent if you could give an explanation that would be good but if not thats okay

Liono4ka [1.6K]

5/20 can also be represented as 25/100 or 25%. The can be done by multiplying the top and bottom both by 5 and then dividing our numerator (25) by our denominator(100) to get the %.

3 0

3 years ago

Read 2 more answers