Step-by-step explanation:
Diameter = 2r
= 7.7 = 2r
7.7/2 = r
3.85=r
Answer is a because a^-2 will be changed to 1/a^2
Hope that helps
Answer: 21
Step-by-step explanation:
Given : Lindsay and Lorraine are trying to match the jump rope world record.
Number of jumps they need to jump together in a row = 48
Lindsay has gotten 14 jumps in a row, and Lorraine has gotten 13.
Total jumps = 14+13=27
Let 'j' be the number of more jumps they need to match the record.
j= Total jumps needed - Total jumps they already gotten
⇒ j= 48-27
⇒ j= 21
Hence, they need 21 more jumps to match the record.
Answer:
mmmm
Step-by-step explanation:
13.9 sounds correct, try it
Answer:
The atomic mass
Step-by-step explanation:
The decimal at the bottom of an element represents how much one atom of that element weighs.
