Answer:
If you mean the area then 21ft
Step-by-step explanation:
3ft times 7ft= 21ft
Formula for area of parallelogram
A=BH
or
A=B times H
B is base and H is height
Hopefully that helps:)
Answer:
B
Step-by-step explanation:
Let's call the younger student's age A and the older student's age B. The teacher's age will be T.
B = 2A
T = 5B
T+5 = 5(A+5)
Simplify the last equation.
T+5 = 5A+25
T = 5A+20
Now we have two equations solved for T, so we can set them equal to each other.
5B = 5A + 20
We can plug 2A in for B
5(2A) = 5A + 20
10A = 5A + 20
5A = 20
A = 4
To find T, we plug 4 in for A in T = 5A + 20
T = 5(4) + 20
T = 40
The answer is 40 years old.
Answer: 
Step-by-step explanation:
I don’t know but c i guess
