Answer:
you need three pencil cases to hold all of your pencil
Answer: A. 
Step-by-step explanation:
First, apply exponent rule.



Hope this helps!
Thank you for posting your question.
-Charlie
Answer:
2 i think i dint sleep last night sorry if im wrong
Step-by-step explanation:
A.T.Q,
Let, the width = x
It would be: 9/16 = 4.5/x
x = 4.5/9 * 16
x = 16/2
x = 8
So, your final answer & width would be 8 cm
Hope this helps!
Answer:

And if we count the number of zeros before the number 7, we can rewrite the number like this:

We cansolve this problem also counting the number of positions that we need to move the decimal point to the right in order to obtain the first number (7)
And the best option would be:
B. 7 x 10-7
Step-by-step explanation:
For this case we have the following number given:

And if we count the number of zeros before the number 7, we can rewrite the number like this:

We cansolve this problem also counting the number of positions that we need to move the decimal point to the right in order to obtain the first number (7)
And the best option would be:
B. 7 x 10-7