Monday

March 2, 2015

March 2, 2015

Posted by **andytrfmn** on Wednesday, February 20, 2008 at 1:27pm.

- algerbra -
**Damon**, Wednesday, February 20, 2008 at 1:35pm10^7 * 10^3

-------------

10^4 *10^-9

to multiply, add exponents if the base is the same.

Of course that means to divide, subtract exponents.

Since the base for all of these is ten, all we have to do is add and subtract.

7 + 3 - 4 - -9 of course - - is +

7 + 3 - 4 + 9 = 15

so the answer is :::

10^15

- algerbra -
**Guido**, Wednesday, February 20, 2008 at 4:59pmWe have this:

10^7 * 10^3

------------- =

10^4 * 10^-9

We can multiply the numerators and denominators as step one, if you'd like.

10^7 * 10^3 = 10^10 = our numerator.

10^4 * 10^-9 = 10^-5 = our denominator.

We now have this fraction:

10^10/10^-5

Since we have the SAME BASE of 10 in the numerator and denominator, we simply SUBTRACT THE EXPONENTS.

Our exponents are:

10 - (-5) = 10 + 5 = 15

Final answer: 10^15, which is read:

"ten to the fifthteenth power."

The word power also means exponent, which also means degree.

Is that clear?

**Answer this Question**

**Related Questions**

algebra2 plzz help - how do you solve these problems (5x)to the power of a+4(5x)...

geometry - 10x(to the 5th power)y(to the 4th power) over 15x(to the third power)...

algebra - 7s over 5t to the negative 3rd power 2 to the negative 3rd power times...

8th grade Math - I'm actually in 7th grade, but I'm doing 8th grade pre-algebra...

Math - I need help with these questions: Copy the equations. Add brakcets to ...

physics - The disk shaped head of a pin is 1.0 mm in diameter. Which of the ...

college - let i = the square root of -1 with i to the 1st power =i, i to the 2nd...

algebra - Find an integer M such that M x 2 to the third power x 3 to the 7th ...

math - find the greatest common factor and simplify your answer. 4v to the 7th ...

Algebra II - The problem states: Saturn is approximately 1.4x 10 to the 9th ...