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hodyreva [135]
3 years ago
7

It takes three identical water pumps 8 hours to fill a pool.

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
4 0
10 hours and 40 minutes
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50 POINTS! QUICKLY Are the pairs of variables x and y the solutions to the equation x^2–2y=7?
Fittoniya [83]

Hi there!

\large\boxed{(5,8) \text{ and } (1.2, -2.78)}}

We are given the equation:

x² - 2y = 7

To verify if each ordered pair is apart of the function, we can plug in their respective x and y values:

1. (5)² - 2(8) = 7

25 - 16 = 9 ≠ 7. This is NOT correct.

2. (-1)² - 2(-3) = 7

1 + 6 = 7. This is correct.

3. (-4)² - 2(-11.5) = 7

16 + 23 = 39 ≠ 7. This is NOT correct.

4. (1.2)² - 2(-2.78) = 7

1.44 +5.56 = 7. This is correct.

Thus, only 1 and 4 are the correct answers.

5 0
2 years ago
Read 2 more answers
Diana usually drives at average rate of 30 mph. If she drives for 2 hours with the speed that is 10 mph more than usual, what di
Rashid [163]

Answer:  80 miles

Step-by-step explanation:

10mph + 30mph = 40 mph

Distance = Speed × time

D = 40m/h × 2 h

D = 80 m

6 0
3 years ago
Please answer the question below<br> |<br> |<br> |<br> v
miskamm [114]

Answer:

The last/bottom graph

Step-by-step explanation:

I would assume it the bottom on because when you reflect off the y-axis, you don't reflect of the y-axis line. You reflect of the x-axis, it is weird.

3 0
3 years ago
Two fractions have a common denominators of 8. What could the two fractions be?
Anna71 [15]
4 and 8 would be the anwser because 4 x 2 = 8 and then 8x1=8
3 0
3 years ago
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Help 1 and 4 fast please
AlekseyPX

Answer:

1)

\leq : Less than or equal to\\\geq :Greater than or equal to\\:greater than

Step-by-step explanation:

N/A

also what is your inequality problem

3 0
3 years ago
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