Thursday
July 24, 2014

Homework Help: Math! Please Check My Awnser!

Posted by Electro on Tuesday, January 14, 2014 at 3:20pm.

Hello! I need some help with math! I have tried to do this but I am unsure about my answers. My I will identify my answers with a "<--". Also, if I have missed one, please tell me the right answer! Also, Thanks for your help in advance! Have a nice day!


1. Which of the following expressions is written in scientific notation?

a. 73.4 x 10^5 <-- My Answer!
b. 0.09 10^7
c. 80 x 10^3
d. 4.22 x 10^3

2. Which of the following is 0.0000000708 written in scientific notation?

a. 7.08 x 10^8
b. 7.8 x 10^8
c. 708 x 10^10 <-- My Answer!
d. 70.08 x 10^9

3. Which expression represents the largest number?

a. 40.1 x 10^6
b. 4.1 x 10^7
c. 0.411 x 10^7
d. 0.04001 x 10^5 <-- My Answer!

4. Which expression is equal to 1/8000 written in scientific notation?

a. 8.0 x 10^3
b. 1.25 x 10^4
c. 125 x 10^5 <-- My Answer!
d. 1.25 x 10^4

5. Which of the following statements is NOT true regarding an expression written in scientific notation in the form of a x 10^n ?

a. The value of a must be greater than or equal to 1 and smaller than 10.
b. The value of n must be an integer.
c. Doubling n results in a doubling of the value of the expression. <-- My Answer!
d. Doubling a results in a doubling of the value of the expression.

6. Which number is equal to 7(3.5 x 10^4) written in scientific notation?

a. 24.5 x 70^4
b. 2.45 x 10^5
c. 24.5 x 10^4
d. 1.05 x 10^5 <-- My Answer!

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