tertre

I think 36,000 ways, hint: what are the total arrangements?

Both the negative signs cancel out, so we are left with 39/13=3.

4^3*4^-5=4^3+-5=4^-2, so (A), and 4^-2=1/16, and that is also (B). (H) also works two: 1/4^2=1/16. (I) also works! and, (j) too, 4^3/4^5=1/4^2=1/16. 

Yes, now plug the value of y in terms of x.

Yeah, sure.

Welcome! It was fun solving! 

We can convert each of the decimals, to numbers by moving the decimal point:

So, Japan=12.718*10^7=12718*10^4=127,180,000

Brazil: 2.0*10^8=2*10^8=200,000,000 ( Most Populated)

Germany: 80.619*10^6=80619*10^3=80, 619,000

United Kingdom: 63,708,000

Nigeria: 0.00173615*10^11=173615*10^3=173, 615, 000

Bangladesh: 15, 251*10^4=152, 510, 000

So, 

Brazil

Nigeria

Japan

Bangladesh

Germany

United Kingdom

Distance from Earth, to Star A: 0.176*10^18

Distance from Earth, to Star B: 22.13*10^16

So, 17.6*10^16 and 22.13*10^16. So, (22.13-17.6)*10^16= 4.53 *10^16 km.

(1) We have 3x+y=-2, 2x-3y=-5. We want to find a value of x that equals y. So, bringing 3x to the other side in the first equation, we get: y=-2-3x. The second equation: 2x-3y=-5, -3y=-5+2x, y=-5+2x/-3.

So, -2-3x=-5+2x/-3, so x=-11/7. Plugging the value of x in, in order to solve for y, we get: 3(-11/7)+y=-2, y=19/7.

Plugging $375 for \(W\)\(\) , we get: \(M=\frac{52(375)}{12}=1625\) , or (B).