Question

1.5 X 10^12 = (5 X 10 ^5)(3 X10^n) find the value of n please!

Answer 1

n = 7

Explanation:

1.5 X 10^12 = (5 X 10 ^5)(3 X10^n)

Multiply (5 X 10 ^5)(3 X10^n)

So, 5*3*10^5*10^n

= 15*10^5+n -> recall that (a^x)(a^y) = a^x+y

So now it is 1.5 X 10^12 = 15*10^5+n

Solve for n

5+n = 12

n = 12-5

n = 7