Answer:
127.5
Step-by-step explanation:
(2x+7)+(6x-9)=180
2x+6x+7-9 = 180
8x-2=180
8x=182
x=22.75
6x-9=
6(22.75)-9=
136.5-9=
127.5 Answer
Combine like terms
2a² + 6a² = 8a²
8a² - 5
Answer:
For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 0.02 g/mi
Standard Deviation, σ = 0.01 g/mi
Sample size, n = 81
We are given that the distribution of level of nitrogen oxides is a bell shaped distribution that is a normal distribution.
Standard error due to sampling:

Formula:
We have to find the value of x such that the probability is 0.01
P(X > x)
Calculation the value from standard normal z table, we have,
For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.
Answer:
320
Step-by-step explanation:
distance=speed*time= 8 *40.
Answer:

Step-by-step explanation:
Notice that there are 6 sums of 7 on the table provided. For example rolling a 1 and then a 6 would produce a sum of 7.
The reason the answer is 12 and not 6 is that you need to double it for the two dice. Let's say one die was green and the other was blue. The green die could be the 1 and the blue die could be the 6. That is one favorable outcome, but it could be switched. Maybe the green die was 6 and the blue die was 1.