Answer:
13 by 20 inches
Step-by-step explanation:
Represent the quantities as follows:
P = 2W + 2L
L = W + 7
Then P = 2W + 2(W + 7), or P = 4W + 14
and this formula has the value 66 inches.
Thus, P = 66 inches = 4W + 14 inches, or
52 inches = 4W
Dividing both sides by 4, we get W = 13 inches.
The width is 13 inches and the length is (13 + 7) inches, or 20 inches.
Answer:
27 cm2
Step-by-step explanation:
The answer is 27 cm 2 because if you use length x base x height you would get your answer. So 6 x 3 x 3 = 54 and then if you divide that by 2 you would get 27
Answer:
12 is missing
Step-by-step explanation:
4n - 6m = -2
Let n = -2
4(-2) - 6m = -2
-8 - 6m = -2
-6m = -2 +8
-6m = 6
m = 6/-6
m = -1
So, when n is -2, m is -1.
Now, do the same when n is -1 and again when n is 0.