Answer:
x=5,y=-12
Step-by-step explanation:
You add the two equations to get: 4x=20
Then you get x=5.
You plug this in to x-y=17 to get y=-12
The answer is x=5 and y=-12
Answer:
336 ft²
Step-by-step explanation:
The rectangle is 13 ft long and 8 width that means we have two walls 8* 9 and two walls 13*9
Total walls area is
2*8*9 + 2*13*9 = 144 + 234 = 378 ft²
then we subtrac , areas of door, closet and windows
3 * 6.5 = 19,5 ft²
3 * 6,5 = 19,5 ft²
2 * 1,5 = 3 ft²
42 ft²
Then area to paint 378 - 42 = 336 ft²
Answer:
12 in.
Step-by-step explanation:
Formula: a^2 + b^2 = c^2
This case: c^2 - a^2 = b^2
1) 15^2 + 9^2 = b^2
2) 225 - 81 = 144
3) = 12
Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm