Answer:
n - 4
Step-by-step explanation:
6 - x = 2
8 - x = 4
9 - x = 5
n - x = ?
->
x = 4
n - 4
So when does y1 = y2?
at
2 (5x + 3) = (x2 -15)
solve and advise answer in comments and will assist further
Answer: One DVD is $12 and one book is $1
Step-by-step explanation:
Let the DVD be d and the book be b.
Case 1:
3d + 4b = $40.......(1)
Case 2:
1d + 6b = $18........... (2)
In this equations above, I intend to eliminate variable d, so I'm going to multiply the coefficient of d in (1) to multiply (2)
3 × (1d + 6b = 18)
3d + 18b = 54........ .(3)
Then, subtract (1) from (3)
3d + 18b = 54
- ( 3d + 4b = 40)
3d - 3d + 18b - 4b = 54 - 40
0 + 14b = 14
b = 14/14
b = 1.
Then substitute 1 for b in (2)
1d + 6(1) = 18
d + 6 = 18
d = 18 - 6
d = 12.
(d,b) = (12,1)
Answer:
488 sq ft
Step-by-step explanation:
Alright, so:
The formula for the area of a trapezoid is as follows:

In this case, a and b are the bases.
Insert the values into our equation and we have...

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