P= a+b+c = 76
side a = 2b = 30
side b = b = 15
side c = 2b + 1 = 31
Answer:
x= 5pi/4, 7pi/4
Step-by-step explanation:
DE + EF = 4x+2
DE = x+7
EF = 7
Substitute these in
x + 7 + 7 = 4x + 2
x + 14 = 4x + 2
subtract x from both sides
14 = 3x + 2
subtract 2 from both sides
3x = 12
divide both sides by 3
x = 4
substitute this in to find the length of DE
DE = x + 7
(4) + 7 = 11
the answer is 11
Answer:
y = 8x + (any number other than 7)
Step-by-step explanation:
All of the other lines will be parallel to y = 8x + 7 they will never cross so there isn't a solution.