Since .24 times 9 is 2.16, then she spent 9 minutes on the phone.
-Let me know if you need clarification :)
Answer:
8 pi
Step-by-step explanation:
When radius is
L = r * Θ = 2 * π/4 = 1.57079633 cm.
When radius is
L = r * Θ = 10 * π/4 = 7.85398163 cm.
Answer:
d or b
Step-by-step explanation:
look at where the c and a are and the numbers alighn
➠The key tells the reader what values are represented in the display. To do this, select one term in the plot and separate the digits by a vertical line, then use the equal sign to show what it is equivalent to. It will look like this, 6|8=68.
First we find the mean (average)
(17 + 18 + 19 + 20 + 21) / 5 = 95/5 = 19
now subtract 19 from all values...then square it
17 - 19 = -2...-2^2 = 4
18 - 19 = -1...-1^2 = 1
19 - 19 = 0...0^2 = 0
20 - 19 = 1....1^2 = 1
21 - 19 = 2...2^2 = 4
now take the mean (average) of those
(4 + 1 + 0 + 1 + 4) / 5 = 10/5 = 2 <== this is ur variance
standard deviation is the square root of the variance...
sq rt 2 = 1.414