Answer: =−14a3−2a2+12
Step-by-step explanation:
−5a3−7a2+3−9a3+5a2+9
=−5a3+−7a2+3+−9a3+5a2+9
Combine Like Terms:
=−5a3+−7a2+3+−9a3+5a2+9
=(−5a3+−9a3)+(−7a2+5a2)+(3+9)
=−14a3+−2a2+12
Answer:
=−14a3−2a2+12
The unit consumption of gas can be obtained by dividing the total distance traveled in miles by the total gallons of gas consumed by the trip. This is shown below:
121.72 miles / 6.8 gallons = 17.9
Therefore, on a gallon of gas, Amir can travel 17.9 miles, which is letter B among the choices.
Answer:
(a)P(x>85.55)=0.02275
(b)
Step-by-step explanation:
We are given that
Average sales for an online textbook distributor per customer per purchase
,
$67.63
Standard deviation of the amount spent on textbooks,
$8.96
(a) We have to find probability for a randomly selected customer spent more than $85.55 per purchase.

=
=
=
P(x>85.55)=0.02275
(b)We have to find probability for a randomly selected customer spent less than $76.59 per purchase


