Answer:
first off, welcome to brainly, second, your answer is 14.4
Step-by-step explanation:
12 because the rest of the numbers are all similar except 12
Answer:
10
Step-by-step explanation:
10y+15=7y+45
10y-7y=45-15
3y=30
y=10
hope it helps you!
Answer:
2: The perimeter of the base is 37 units.
Step-by-step explanation:
1. A = LW = 21 * 16 = 336 units^2 True
2. P = 2(L + W) = 2(21 + 16) = 2(37) = 74 units False
3. H = 21 units True
4. SA = 2LW + 2H(L + W) = 2(21)(16) + 2(21)(21 + 16) = 2226 units^2 True
