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VladimirAG [237]
3 years ago
8

The pool is open every day from 11:00 a.m. until 8:00 p.m. How many hours is the pool open each day? *

Mathematics
1 answer:
taurus [48]3 years ago
6 0

Answer:

9 hours

Step-by-step explanation:

From 11:00 a.m. to 12:00 p.m. the elapsed time is 1 hour. From 12:00 p.m. to 8:00 p.m. the elapsed time is 8 hours. Add 8 + 1 to get 9 hours.

Hope it helps!

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(Picture) MULTIPLYING POLYNOMIALS AND SIMPLIFYING EXPRESSIONS PLEASE HELP!!!!
Sidana [21]

Answer:

-2p^2-11p-35

Step-by-step explanation:

-2(p+4)^2-3+5p

First we square the parenthesis. Apply FOIL method to multiply

(p+4)^2= (p+4)(p+4)= p^2 + 4p+4p+16= p^2+8p+16

-2(p^2+8p+16) -3+5p

distribute -2 inside the parenthesis

-2p^2-16p-32-3+5p

Now combine like terms

-2p^2-11p-35


3 0
3 years ago
For which survey is a sample not necessary?
BARSIC [14]

Answer:

<h2>How many car accidents involve airbag malfunctions?</h2><h2 />

This is because there's no need to survey an entire population for accurate results.

The other 3, regarding Colorado residents, middle school students, and classmates are considered a population.

For testing the amount of car accidents, a population is not needed.

<em />

<em>I hope this helped you!</em>

7 0
3 years ago
Read 2 more answers
You withdraw 260$ from your bank account in 5 trips to the ATM. what is the average change in your account balance for each trip
N76 [4]
To find the average over 5 times, we have to divide the total by 5. Therefore, 260/5 = 52 = the average change in your account balance each trips. 260 = amount of money you withdraw, 5 = number of trips made by the ATM. We need to divide due to that if something is spread out equally 5 times, what you get in one time clearly won't be all of it
8 0
3 years ago
Determine whether the given equation has one solution, no solution, or infinitely many solutions. 2/3x = 9 - 2(-1/3x + 3)
Sonja [21]

Answer:. One solution

Step-by-step explanation:

7 0
4 years ago
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Beatrice calculated the slope between two pairs of points.
kumpel [21]

Answer:

The answer in the procedure

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

step 1

Find the slope between (-3, -2) and (1, 0)

m=\frac{0+2}{1+3}

m=\frac{2}{4}=\frac{1}{2}

Find the equation of the line

y-y1=m(x-x1)

with m and the point (1,0)

substitute

y-0=\frac{1}{2}(x-1)

y=\frac{1}{2}x-\frac{1}{2}

step 2

Find the slope between (-2, -1) and (4, 2)

m=\frac{2+1}{4+2}

m=\frac{3}{6}=\frac{1}{2}

Find the equation of the line

y-y1=m(x-x1)

with m and the point (4,2)

substitute

y-2=\frac{1}{2}(x-4)

y=\frac{1}{2}x-2+2

y=\frac{1}{2}x

<em>Compare the equation of the two lines</em>

The two lines are parallel, because their slope is the same, but are different lines

therefore

Beatrice's conclusion is incorrect

All of these points are not on the same line, because are different parallel lines

The slope between (-2,-1) and (1,0) is equal to \frac{1}{2}

8 0
4 years ago
Read 2 more answers
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