Answer:
Step-by-step explanation:
Circumference is pi × diameter
Diameter is 2x radius
10π is the circumference
10π= 31.4cm
Answer:
0.125
Step-by-step explanation:
0.125= 1/8, and 1/8 is between 1/10 and 1/7
Answer:
principal square root
Step-by-step explanation:
Let
.
Then 
We have a negative square root for x, which is
and a nonnegative square root,which is 
The nonnegative square root is callled the principal square root .
Therefore the best complete to the statement;
A -------- is the nonnegative Square root of a number, is principal square root.
As the movement, it is not accelerated then
Xr = 30 T
Xp = 45(t-1)
they both will meet when x is the same, so
30T = 45T - 45
T = 3
they both will meet 3 hours after Roberto leaves, at 2 pm