The second i think you did good
So perm cost 2 times as hair cut
perm=2 times haircut
she also needs 5 dollars for lunch
so therefor if 95 is enough to cover it we do
cost=lunch+perm+haircut
cost=5+perm+haircut
subsitute
95=5+2 times haircut+1 time haircut
add like terms
95=5 +3 times haircut
subtract 5 from both sides
90=3 times haircut
diide by 3
30=haircut
subsitute
perm=2 times haircut=2 times 30=60
perm=$60
Answer:
A y<= -1/3x+1
Step-by-step explanation:
You didn’t give us enough info but I will say C.
Let a,b,c be the sides of the triangle. Make c the longest side. The value of a and b doesn't matter.
a = 9
b = 40
c = 41
The value of a^2+b^2 is
a^2+b^2 = 9^2+40^2 = 1681
The value of c^2 is
c^2 = 41^2 = 1681
Because a^2+b^2 = c^2 for these values, this means that we have a right triangle.
Answer is choice D
