Answer:
-k-14
Step-by-step explanation:
Use distributive property and then just carry on and combine like terms.
Answer:
circumference=πD
R=10
D=20
3.14*20
=68.2
Step-by-step explanation:
6x / x²
the reciprocal of a number n is 
the reciprocal of
is 
The product of a number and it's reciprocal = 1
Answer:
129.99
Step-by-step explanation:
129.99 rounds to 130 because the 9 in the hundredths place causes the 9 in the tenths place to round up, making the number 130.0.