Answer: D
Step-by-step explanation:
Answer:
15y^2 -1
Step-by-step explanation:
(7y^2+y-7)+(8y^2-y-6)
15y^2-1
60,000,000,000 in scientific notation is 6 x 10^10 so you move the decimal 10 times.
Answer:
x = 0 or x = -7
Step-by-step explanation:
Solve for x over the real numbers:
6 x^2 = -42 x
Add 42 x to both sides:
6 x^2 + 42 x = 0
Factor x and constant terms from the left hand side:
6 x (x + 7) = 0
Divide both sides by 6:
x (x + 7) = 0
Split into two equations:
x = 0 or x + 7 = 0
Subtract 7 from both sides:
Answer: x = 0 or x = -7
Answer: 23.7 lb
Step-by-step explanation:
Mean m = 15 lb
Standard deviation d = 3.3 lb
To determine the surcharge weight, we need to know the highest weight of 99% of the parcels.
P(z<x) = 0.99 = ¢(Z)
Z = 2.33
Since Z = (x - m)/d
x = dZ + m
x = 3.3*2.33 + 15
x = 22.689 lb approximately
x = 22.7 lb
Therefore, the highest weight for 99% if the parcels is 22.7 lb.
That is, the surcharge weight = 22.7 + 1 = 23.7 lb