Answer:
97.6% of the trees will have diameters between 7.6 and 18.6 inches.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 12 inches
Standard Deviation, σ = 2.2 inches
We are given that the distribution of diameter of tree is a mound shaped distribution that is a normal distribution.
Formula:

P(diameters between 7.6 and 18.6 inches)

97.6% of the trees will have diameters between 7.6 and 18.6 inches.
The answer it’s a. Pretty sure if not sorry
Answer:
Step-by-step explanation:
find the slope

take a coordinate to fill in

this means that the equation is y=2x-13
and if you add m and b
you get :-11
<u><em>I HOPE THIS HELPS</em></u>
Answer:
a = 3
Step-by-step explanation:
1) Simplify 5a - 9 + a to 6a - 9.

2) Add 9 to both sides.

3) Simplify 9 + 9 to 18.

4) Divide both sides by 6.

5) Simplify 18/6 to 3.

Therefor, the answer is, a = 3.
A is true--------------------------