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3 years ago

6

Six pumps working together empty a tank in 28 minutes. How long will it take to empty the tank if 4

1 answer:

Katarina [22]3 years ago

6 0

Answer:

prob more time ngl

Step-by-step explanation:

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Find the zeros of the function f(x)=2x^2-7x-30

ivanzaharov [21]

$2x^2-7x-30=0 \\ \\
a=2 \\ b=-7 \\ c=-30 \\
b^2-4ac=(-7)^2-4 \times 2 \times (-30)=49+240=289 \\ \\
x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-(-7) \pm \sqrt{289}}{2 \times 2}=\frac{7 \pm 17}{4} \\
x=\frac{7-17}{4} \ \lor \ x=\frac{7+17}{4} \\
x=\frac{-10}{4} \ \lor \ x=\frac{24}{4} \\
x=-\frac{5}{2} \ \lor \ x=6 \\
\boxed{x=-2.5 \hbox{ or } x=6}$

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2 years ago

What is the perimeter?

maria [59]

Answer:

14

Step-by-step explanation:

because the side length are 5 and 5 and 4 which is 14.

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2 years ago

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3 years ago

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aev [14]

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3 years ago

Woodland high school

lesantik [10]

That is correct because it’s a real high school

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