MOE = +\- 1.27
The 99% confidence interval ranges from 53.73 to 56.27 hours.
add the two equations together
5a+5b=25
-5a+5b=35
------------------
0 + 10b =60
divide by 10
b=6
5a + 5b = 25
5a +5(6) = 25
5a +30 =25
subtract 30 from each side
5a =-5
divide by 5
a = -1
Answer (-1,6)
or a=-1 b=6
Answer:
24.
Step-by-step explanation:
First, use the Order of Operations:
PEMDAS.
First, divide, then multiply to get your solution.
21 / 7 = 3.
3 · 8 = 24.
Therefore, your answer is 24.
Answer:
20. hours
Step-by-step explanation:
I think the correct answer is
D.
the product of x and a factor depending on x
SORRY if I am wrong.
