Which expression is equivalent to the expression shown (5^3)^9 divides by 5 ^12

5^15

Step-by-step explanation:

(5^3)^9

5^12

Power to a power means multiply

5^3^9 means 5^(3*9) = 5^27

5^27

5^12

Division with the same base means subtract the exponents

5^(27-12)

5^15

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b