3 years ago

Help me please..

Mathematics

1 answer:

Strike441 [17]3 years ago

7 0

Answer:

120

Step-by-step explanation:

240 / 2 = 120

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When a certain valve is open, 281 gallons go through it in one hour. The number of gallons that would go through in 94 hours is?

yarga [219]

281 gallons/ 60 min= 4.683 gallon per min
4.683 gallon per min * 94 hours= 440.23 gallons

Answer: 440.23 Gallons

8 0

2 years ago

Find x Thanks for the help in advance!

Marina86 [1]

I'm not sure if this is the easiest way of doing this, but it surely work.

Let the base of the triangle be AB, and let CH be the height. Just for reference, we have

$AH=2,\quad HB=6,\quad AC=x$

Moreover, let CH=y and BC=z

Now, AHC, CHB and ABC are all right triangles. If we write the pythagorean theorem for each of them, we have the following system

$\begin{cases}4+y^2=x^2\\36+y^2=z^2\\x^2+z^2=64\end{cases}$

If we solve the first two equations for y squared, we have

$y^2=x^2-4\\y^2=z^2-36$

And we can deduce

$z^2 = x^2+32$

So that the third equation becomes

$x^2+x^2+32=64 \iff 2x^2 = 32 \iff x^2=16 \iff x=4$

(we can't accept the negative root because negative lengths make no sense)

7 0

2 years ago

PLEASE SOLVE!! n/5+0.6=2

VladimirAG [237]

N equals 7. you need to subtract 0.6 from both sides and then multiply both sides by 5 to get the answer

3 0

2 years ago

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Books are packed into boxes of 90. 23 boxes on 1 crate. How many crates will be needed to pack 270000 books.

agasfer [191]

Answer:

130 crates

Step-by-step explanation:

270,000/90=3000/23

3000/23=130.43

rounded: 130 crates

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2 years ago

6w^2-11w-35 I need to factor the problem

antiseptic1488 [7]

6w^2 - 21w + 10w - 35
3w( 2w - 7) + 5 ( 2w - 7)
(3w + 5) ( 2w - 7)

This is the factorised form.

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3 years ago

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