Answer: The height of each fir tree is 9 meters, and the height of each pine tree is 12 meters.
Step-by-step explanation:
Let x= height of each fir tree, y = height of each pine tree.
As per given, we have
x+y = 21 (i)
4x=y+24 (ii)
From (ii),
(iii)
Add (i) and (iii), we get

Put value of x in (i), we get

Hence, the height of each fir tree is 9 meters, and the height of each pine tree is 12 meters.
I think that x=2 and so does y=2. Hope that answers your question.
Options:
A.) square root
B.) exponential
C.) absolute value
D.) cube root
Answer : A) square root
We know area of square having side 's' = s* s = 
For example
Area of square = 
To find side we take square root
Area = 
16 = 
Take square root on both sides

4= side
Betsy knows that the area of the rug is A square feet.
Area A = 

So answer is square root.
see the attached figure to better understand the problem
we have that

Step 1
<u>Find the value of AC</u>
we know that
in the right triangle ABC

substitute the values in the formula

Step 2
<u>Find the value of BC</u>
we know that
in the right triangle ABC
Applying the Pythagorean Theorem

substitute the values

Step 3
<u>Find the value of BD</u>
we know that
in the right triangle BCD
Applying the Pythagorean Theorem

substitute the values


therefore
<u>the answer is</u>
the length of BD is 11.93 units
Answer: a's value is (6,8) B is (-3,7), and C is (-7,-2)