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oksian1 [2.3K]
3 years ago
10

Pump a can empty a pool in 20 hours and pump b can empty it in 24 hours. working together, how long

Mathematics
1 answer:
Umnica [9.8K]3 years ago
5 0
I would guess 4 hours in that case
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Hey<br> see if u can help<br><br> Brainliest now!!!
Marianna [84]

Answer: (C) x² - 4x + 5 = 0

<u>Step-by-step explanation:</u>

   x = 2 ± i

⇒ x = 2 + i             and       x = 2 - i

⇒ x - (2 + i) = 0     and        x - (2 - i) = 0

 0 = (x - 2 - i)(x - 2 + i)

     = x(x - 2 + i)   -2(x - 2 + i)   -i(x - 2 + i)

     = x² - 2x +xi   -2x + 4 <u>- 2i</u>   -xi <u>+ 2i</u> - i²

     = x² - 4x + 4 - i²

     = x² - 4x + 4 -(-1)

     = x² - 4x + 5

***************************************************

Answer: B

Explanation:

The slope from (0, 0) to (1, 4) is a rise of 4 and a run of 1, thus, m = 4/1 = 4

5 0
3 years ago
A custodian went to buy x boxes of cleaning supplies and y boxes of light bulbs. He had the back of a van to transport them. Giv
VashaNatasha [74]
Answer is last option (50,5)
8 0
3 years ago
Read 2 more answers
Solve for h.
Luden [163]
Solving for h means we write the equation in such a way that h is isolated from other variables. It is done as follows: 

(P = mgh) 1/mg
P/mg = mgh/mg
h = P/mg

Therefore, the correct answer from the choices listed above is option C, h = p/mg.

Hope this answers the question. Have a nice day. 
4 0
3 years ago
Need help asap!! thank you
Elena L [17]

Answer:c

Step-by-step explanation:

c

3 0
4 years ago
Read 2 more answers
Is it possible for a quadrilateral to be both a rhombus and a parallelogram
leva [86]
The answer is yes, because rhombus =parallelogram answer is yes
3 0
3 years ago
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