Step-by-step explanation:
Circumference of a circle is 2piR
C=2piR and R=10
C=2(3.14)(10)
So the circumference is 62.8 cm
Answer:
x = -1
Step-by-step explanation:
Given: 
Solve for x, When: 
Step by step:





Answer:
0.0000007 as a regular notation
or 7x10^-7 as scientific notation
Answer:
7 weeks
Step-by-step explanation:
500-200=300. 300 divided by 40 is 7.5 so 7 weeks