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2 years ago

Which unit would you use to measure the amount of water in a swimming pool?

1 answer:

nataly862011 [7]2 years ago

7 0

If you want to describe the mass of the water in the pool,
then you'll express it in kilograms.

If you want to describe the volume of the water in the pool,
then you'll express it in Liters.

(Those two numbers will be pretty close to equal.)

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Plz help me 75 points for the 2 questions!!!

liraira [26]

Answer:

<u>The system of equations:</u>

2x + 7y = -11
3x + 5y = -22

Solve by elimination.

<u>Triple the first equation, double the second one, subtract the second from the first and solve for y:</u>

3(2x + 7y) - 2(3x + 5y) = 3(-11) - 2(-22)
6x + 21y - 6x - 10y = -33 + 44
11y = 11
y = 1

2x + 7*1 = -11
2x = -11 - 7
2x = -18
x = -9

<u>The solution is:</u>

x = -9, y = 1

<u>Simplifying in steps:</u>

8u - 29 > -3(3 - 4u)
8u - 29 > - 9 + 12u
12u - 8u < -29 + 9
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u < -5

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3 years ago

Can someone please help me with this math problem

IrinaK [193]

Answer:

y = 10x + 7

Step-by-step explanation:

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2 years ago

Multiply 4 and 7. Then, divide by q.

Makovka662 [10]

Answer:

28/q

Step-by-step explanation:

4 times 7 equals 28 and then divide 28 by q

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3 years ago

A newspaper reported that in one year the United States imported goods from China worth a total of 385 billion dollars. What is

8_murik_8 [283]

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3 years ago

Abril and Alanis put some money into their money boxes every week. The amounts of money (y), in dollars, in their money boxes af

AnnZ [28]

Answer:

A. 3 weeks, $160

Step-by-step explanation:

If the value of y is same for both then we have equal right sides of equations

50x + 10 = 30x + 70

Solve this for x

50x - 30x = 70 - 10
20x = 60
x = 60/20
x = 3

Find the value of y

y = 50*3 + 10 = 150 + 10 = 160

Correct choice is A

8 0

1 year ago