SOLUTION: Please help with this problem. I know that I am suppose to divide the num by the denom, add or subtract the exponents and then multiply. This is the answer that I came up with -

Algebra ->  Decimal-numbers -> SOLUTION: Please help with this problem. I know that I am suppose to divide the num by the denom, add or subtract the exponents and then multiply. This is the answer that I came up with -       Log On


   

Question 32548: Please help with this problem. I know that I am suppose to divide the num by the denom, add or subtract the exponents and then multiply. This is the answer that I came up with - 2.94 x 10 (-41) "Number in parenthesis is the exponent)
0.00014 2.6 x 10 (-12)
_______ x ______________
3.2 x 10 (-12) 3.9 x 10 (12)
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
+%28%280.00014%29%2F%283.2%2A10%5E-12%29%29%29+ * +%28%282.6%2A10%5E-12%29%2F%283.9%2A10%5E12%29%29%29+
First ... change the numerator of the first fraction to scientific notation as well.
+%28%281.4%2A10%5E-4%29%2F%283.2%2A10%5E-12%29%29%29+ * +%28%282.6%2A10%5E-12%29%2F%283.9%2A10%5E12%29%29%29+
I would multiply first, since dividing first will give you a nasty decimal on the second fraction.

Multiply the decimals
1.4 * 2.6 = 3.64
3.2 * 3.9 = 12.48
Add the exponents
-4 + -12 = -16
-12 + 12 = 0
+%283.64%2A10%5E-16%29%2F%2812.48%2A10%5E0%29+
adjust the decimal in the denominator
+%283.64%2A10%5E-16%29%2F%281.248%2A10%5E1%29+
Divide
3.64 / 1.248 = 2.91666.....
Subtract the exponents
-16 - 1 = -17
I would round this answer
+2.917+%2A+10%5E-17+