3 years ago

2x + y + z = 9 -x-y +z = 1 3x - y +z=9

Mathematics

1 answer:

DiKsa [7]3 years ago

3 0

Answer:

603 hope this helps

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I have 20 books. Some are English and some are French. If 15 books are French, what fraction of books are in English?

allsm [11]

15/20 are French so 5/20 are English
Simplified that’s 1/4
Only applies if all the books are either English or French
I think

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2 years ago

The potential energy, P, in a spring is represented using the formula P = P equals StartFraction one-half EndFraction k x square

Anastaziya [24]

Answer:

$k=\frac{2P}{x^{2}}$

Step-by-step explanation:

The question is

Which equation should she use?

we have the formula

$P=\frac{1}{2}kx^{2}$

Solve for k

That means ----> isolate the variable k

Multiply by 2 both sides

$2P=kx^{2}$

Divide by x^2 both sides

$\frac{2P}{x^{2}}=k$

Rewrite

$k=\frac{2P}{x^{2}}$

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3 years ago

-1.2 = 1.8x what does x equal?

Eddi Din [679]

Answer:

Step-by-step explanation:

. 6

6 0

2 years ago

Read 2 more answers

Debby was packing up some of her old stuff into a box a box can hold 9 pounds but she only filled it up 8/10 full how much weigh

Vikentia [17]

Multiply pounds box can hold by percent full.

= 9 * 8/10
= (9*8)/10
= 72/10
= 7.2 pounds full

ANSWER: 7.2 pounds was in the box

Hope this helps! :)

4 0

3 years ago

Please tell me the final answer to number 3. Also, excuse my pencil markings.

Ipatiy [6.2K]

Area of a trapezoid = (1/2) * h * (base1 + base2)
A = (1/2) * 25 * (26 + 54)
A = 1000 m^2

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2 years ago