Answer:
17
Step-by-step explanation:
for f(6).
Answer:
r=4
Step-by-step explanation:
-4 (r+2) =4 (2-2r)
Divide each side by 4
-4/4 (r+2) =4/4 (2-2r)
-(r+2) = (2-2r)
Distribute
-r-2 = 2-2r
Add 2r to each side
-r+2r -2 = 2-2r+2r
r-2 =2
Add 2 to each side
r-2+2 =2+2
r=4
Check
-4 (r+2) =4 (2-2r)
-4 (4+2) =4(2-2*4)
-4(6) =4(2-8)
-24 = 4(-6)
-24 = -24
This checks
Answer
y = 2x +8
Step-by-step explanation:
Add 2
x to both sides of the first equation to get:
y
=
8
+
2
x
Divide both sides of the second equation by 2 to get:
y
=
8
+
2
x
The two equations determine the same conditions on xy so this system of equations has an infinite number of solutions, namely all points on the line:
y
=
2
x
+
8
Answer:
4500
Step-by-step explanation:
As long as your number isn't less than 500, it will always round up.
Answer:
If Norma performed 178 haircuts in a month, she would pay $534 to either salon
Step-by-step explanation:
Saloon 1:
Cost of saloon 1 = $534
Saloon 2:
Cost of saloon 2 = 3h
Where,
h = number of haircut
Equate the cost of renting either saloon
534 = 3h
h = 534 / 3
h = 178 hair cut
If Norma performed 178 haircuts in a month, she would pay $534 to either salon.