Correct first step to solving the equation 9 (x+2) = 90

Which has the greatest mass? a.) 3.88 x 10^22 moecules of O2, b.) 1.00 g of O2, C.) 0.0312 mol of O2, D.) All of these have the same mass

X/x-2+x-1/x+1=-1 I'm having trouble figuring this out, an explanation on how to solve would suffice.

A parking spaces reserved for motorcycles, cars, and vans. there are five more spaces reserved for vans than for motorcycles. there are three times as many car spaces as van and motorcycle spaces combined.

Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. Sheldon combines an amount of the two cereals in a single bowl of mixed cereal that is 65% fiber.

Evaluate the expression if u = and v =. || v - u || A. B. C. 10 D. - 10

Why is the metric system so important to construction

What is inverse of the function f (x) = x+3

Which equation is not equvilant to A=1/2 bh, A) 2A=bh B) h=1/2bA C) 1/2b=a/h D) d=2A/h

a jet travels 440 miles in 5 hours. At this rate, how far could the jet in 8 hours. What is the rate of speed of the rate

What is the solution to the equation 7 (a - 10) = 13 - 2 (2a + 3) ? a = StartFraction 26 Over 11 EndFraction a = 7 a = StartFraction 89 Over 11 EndFraction a = 621