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siniylev [52]
3 years ago
6

A new type of pump can drain a certain pool in 8 hours. An older pump can drain the pool in 12 hours. How long will it take both

pumps working together to drain the pool.
Mathematics
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

4

Step-by-step explanation:

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Radda [10]

I don't know what this is supposed to mean, but thanks for the free points! ;)

7 0
3 years ago
(PLEASE HELP!!!Which number line can be used to find the distance between (-1,2) and (-5,2)?
KIM [24]

Answer:

I think it is the first number line

Step-by-step explanation:

I think it is this one because it is the only one that shows the placement of -1 and -5. I am sorry if the answer is wrong.

6 0
3 years ago
Complete the square f(x) = x^2 + 4x - 8 <br><br><br> PLZ help me ;c
Semenov [28]
Ok, first group x terms
f(x)=(x²+4x)-8
factor out quadratic coefient (no need but that's the step)
f(x)=1(x²+4x)-8
take 1/2 of the linear coefient and square it
4/2=2, (2)²=4
add positive and negative of it insides the parenthasees
f(x)=1(x²+4x+4-4)-8
factor perfect square
f(x)=1((x+2)²-4)-8
distribute
f(x)=1(x+2)²-4-8
f(x)=1(x+2)²-12
and, now if we wanted to find the x intercepts where f(x)=0 then
0=1(x+2)²-12
12=(x+2)²
+/-2√3=x+2
-2+/-2√3=x

x=-2+2√3 or -2-2√3
that is where the x intercept are

and completed square form is
f(x)=(x+2)²-12
6 0
3 years ago
Can you help me find the area of this triangle??
I am Lyosha [343]
A = (1/2)*b*h = (1/2)*8*10 = 40 . . . . units^2
7 0
2 years ago
3a2 + 16a + 5<br> a2 – 7a + 10
schepotkina [342]
This is thw answer:


-

6 0
2 years ago
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