For the first one,
294 + 30 + x- 37 = 360
add like terms
287 + x = 360
subtract 287 from both sides
x = 73
for the second one
4x +3 = 63
subtract 3 from both sides
4x = 60
divide both sides by 4
x = 15
Answer:
22 feet
Step-by-step explanation:
width = x
length = 4 + 3x
Perimeter = 2(4+3x) + 2x
8+6x+2x =56
8x =48
x=6
4+3x=4+3times6=22 --> lenght
gives the result in decimals. If you want percents, you could multiply the result by 100.
7 is a prime number because it is only divisible by 1 and itself which is 7.
