If you are reffering to this dot plot, it would be 13 trees being studied.
Answer:

Step-by-step explanation:
We are going to use the identity
because this identities right hand side matches your expression where
and
.
So we have that
is equal to
.
3a.
Explanation:
the mean, first of all, is the average. so, you need to find the average between 2 ans 4 since it has the same label. 2+4=6. 6/2=3
Answer: 3a
Answer:
The decimal number is 0.964
Step-by-step explanation:
we have

step 1
Multiply each fraction by the whole number

step 2
Convert each fraction in a decimal number
Remember
Move the decimal point to the left as many places as there are zeros in the factor.
Move the decimal point one step to the left (10 has one zero).
Move the decimal point two steps to the left (100 has two zeros)
Move the decimal point three steps to the left (1000 has three zeros)

step 3
Adds the number

Hi! They are- A,C,E, and F sorry if I’m wrong! Have a great day! :)