Answer:
B) 15
D) 420
Sorry C I don't know.. Xd
Hope it helps you ✌️
Mark me as Brainleist
Pls Follo.w Me
Drop 3 Thx
Have a good day ahead
Answer:847288609443
Step-by-step explanation:
Answer
W=7
Explanation:
The formula for the perimeter for a rectangle is P = 2L + 2W
The formula for the area of a rectangle is A = LW
where L = length and W = width
P = 22 and A = 28
22 = 2L + 2W
28 = LW
Rewriting the 2nd equation L = 28/W
Substituting this into the first equation
22=2(28/W) + 2W
Reworking the equation to eliminate the denominator
22W = 2(28) + 2W2
22W = 56 + 2W2
and
2W2 - 22W + 56 = 0
Dividing by 2
W2 - 11W + 28 = 0
(W-7)(W-4)
Set each factor equal to 0 and solve each for 0
W = 4, W = 7
then W = 4
I got help from my tutor
your welcome
If you have answer choices that would be helpful.
If not I would assume that it means that giving every student the same test is an example of a controlled variable.
