Answer:
The answer to your question is: length = 14 ft; width = 3 ft
Step-by-step explanation:
Data
Area = 42 ft²
length = 8 + 2w
w = width = ?
length = ?
Formula
Area = length x width = l x w
Substitution
42 = (2w + 8)w
42 = 2w² + 8w
2w² + 8w - 42 = 0
Dividing by 2
w² + 4w - 21 = 0 Factorize
(w + 7) (w - 3) = 0
w1 = -7 w2 = 3
It's not possible to have negative widths
So the answer is w = 3 ft
length = 2(3) + 8
length = 6 + 8
length = 14 ft
I believe it's B.
If I'm wrong tell me so I can see what I did wrong.
Answer:
1/13 ≈ 7.69%
Step-by-step explanation:
There are 4 sixes in a standard deck. So the probability is 4/52 = 1/13, or about 7.69%.
Answer: The mechanics spent about 8.5 hours working on the car
Step-by-step explanation: The total bill was $637, a portion of that being getting the parts which was $280. 637-280=357
357/42=8.5
Answer:
48
Step-by-step explanation:
you can do 25 minus 18.76 then you get 6.24 then divide that by .13 and you get 48
