Answer:
C
Step-by-step explanation:
The common ratio r of a geometric sequence is
r =
=
=
×
=
→ C
The standard deviation for the combined assignment is 5 minutes.
To combine the standard deviations, we use:

With our information, we have:
Make them both improper fractions
13/3 divided by 11/9
Divide = multiply reciprocal
13/3 * 9/11 = 117/11 = 10 7/11
Answer:
F
Step-by-step explanation:
The scale drawing is 13 inches. The actual side is 78 feet.
Answer F says 1 * 6. 13 * 6 = 78.