All Answers 358920 Answers

Quote:

The sum of two numbers is 85. Twice one number plus four times the other is 218. Determine the numbers.

michael314:

.8(y-.25y)

Quote:

7x-4y=18
5x+y=17

Dickslang:

Evaluate the following expression.
[2+(15+21)/9]x8

Quote:

Light of wavelength 630 nm travels through a diffraction grating. A third-order bright fringe is observed at 42.0°. How many lines per cm does the diffraction grating have? Answer with four significant digits.

babyy:

-m-3+2+m=-7

Guest:

I'm the guest who answered first.

CPhill is right. i thought about it as I was going to bed and I realized I was wrong. sorry, Ippo

the reason is because there are the different girl position with each guy position.

336776.ths:

Find the unknown Quanity d=3/mL
V=100mL
M=?

Nobody special:

Well, to calculate a percentage, you first convert the percentage into decimal form and then multiply it by the amount that you want the percentage from. So, in your case, you would turn 5% into a decimal number (0.05) and multiply it by 12. ^_^ Hope it helps!

1497556:

4.7/854.48

CPhill:

Note that (w-13) (w-13) = (w-13)^2

So we have (w-13)^2 = 16

Taking the square root of both sides, we have

(w-13) = 4

Add 13 to both sides .......so, w = 17

Nobody Special:

In an arithmetic sequence a_8 = 9 and a_12 = 37. What is a_13?
Is there an equation or something that I'm missing here? Something to simplify it?

If anyone has any ideas, that would be awesome! ^_^

CPhill:

No variable remains after we simplify the left side.

We get

- 1 = - 7

An impossibility!!!

babyy:

m=-1
but how can i get that number?
f(x)=(m+3)x+m-2
f(-2)=-7

babyy:

m=-1
but how can i get that number?
f(x)=(m+3)x+m-2
f(-2)=-7