15 bracelets because 21 minutes are taken to make a bracelet and she has 315 minutes to make bracelets so divide 315 by 21 and u get 15
I believe those are decimals
Step-by-step explanation:
((7²-2×7×3+3²)/8)-1=( 16/8)-1=2-1=1
Answer:
a. 0
b. Yes
c. The manufacturers claim is not plausible
d. 0.3446
e. A sample mean life time of 39.8hr is not unusually short.
f. The manufacturers claim us plausible
Step-by-step explanation:
Please see attachment