so I think 37\12 is the answer to this question
$4 - $2.50 = $1.50 profit for each seat sold
$300 profit when sold out / $1.50 per seat
= 200 seat cushions made
The answer to this is 39 and 27
It began in 1929...right after the stock market crashed
Answer:
13) The planes ABF and FHG are perpendicular
14) Segments Ab and CD are parallel.
Step-by-step explanation:
13)
Planes ABF and FHG are perpendicular (they intersect along side EF)
14)
In order to find out about the segments AB and CD, let's use the formula for the slope that joins any two points
on the plane:

Therefore, given:
A = (-3, 2)
B = (1, 4)
C = (-3, -1)
D = (1, 1)
we have for segment AB the following slope:

and for segment CD the following slope:

Since they show the same slope, these two segments are parallel.