Answer:
63
Step-by-step explanation:
a=9
7a
7(9)
63
The mean = 2,000
s = Sigma ( standard deviation ) = 300
M - 2 s = 2,000- 2 * 300 = 2,000 - 600 = 1,400
M + 2 s = 2,000 + 2 * 300 = 2,000 + 600 = 2,600
Answer.
Useful life of light bulbs within 2 standard deviations of the mean is:
A ) Between 1,400 and 2,600 hours
6.938
Discount = Original Price x Discount %/100
Discount = 34.69 × 20/100
Discount = 34.69 x 0.2
You save = $6.94 ~
Answer:
first one
Step-by-step explanation: doesnt mention the number 8 variable anywhere
Answer:
t = 5
Step-by-step explanation:
It's asking what t needs to equal for the equation to be equivalent to -44.
-10t + 6 = -44
-10t = -50
t = 5
check
-10(5) + 6 = -44
-50 + 6 = -44
-44 = -44
