Answer:
I think it should be 5y+24
Answer:
68 +76
So we do 144/2=72
since its an 8 foot difference subtract 72-4 and 72+4 we get 68 and 76 hope this helped!
Answer:
See below.
Step-by-step explanation:
Infinite Solutions:

No Solutions:

Answer:
a. Only 68% of the students will fall in the range of 10- 2 and 10 + 2 hours.
Step-by-step explanation:
He appies the empirical 68-95-99.7 rule, where 68% of the data is expected to be within ne standard deviation from the mean, to the right and to the left.
Half of this (68%/2=34%) will be between the mean and one deviation standard to the right. This is between 10 hours and 10+2=12 hours.
The right answer is:
a. Only 68% of the students will fall in the range of 10- 2 and 10 + 2 hours.
X*2 + 13x - 48
x*2 +5x +8x - 48
x ( x +5) - 8 ( x +5)
(X+5)(x-8)