Answer:
do 90 times or dvided by 12
Step-by-step explanation:
99.7% encompasses about 3 standard deviations either side of the mean.
82 ±3*2 = (76, 88)
About 99.7% of the values lie between 76 and 88.
Answer:
The length of the ladder is 9.2m
Step-by-step explanation:
Answer:
43.96 inches
Step-by-step explanation:
(refer to attached)
circumference = 2πr, where r = 7 inches and π=3.14
circumference = 2 x 3.14 x 7
= 43.96 inches
You have to substitute 3+h for x, then work out the equation.
(3+h)^2 + 3(3+h) + 5 = 9 + 6h + h^2 + 9 + 3h + 5 =
h^2 + 9h + 23
Answer B.