<span>to find the perimeter</span>
Question is incomplete. Here is the complete question.
A city employee paints curbs iin parking lots and replaces road signs. It takes 0.5 hour to paint a parking lot curb and 2.5 hours to replace a road sign. The function below can be used to find c, the number of parking lot curbs the employee paints when he replaces r road signs in a 40-hour workweek.
If the employee painted 20 curbs in one week, how many road signs did he replace that week?
a) 20 b) 30 c) 0 d) 12
Answer: d) 12
Step-by-step explanation: In one week, the employee painted 20 curbs.
c is the number of curbs painted in one week, so: c = 20
r = 12
In one week, the employee replaced 12 road signs.
Answer:
x = 7; y = 8; z = 5
Step-by-step explanation:
x = 15 - y
y = 13 - z
z = 12 - x
The first equation is solved for x. Substitute x in the third equation with 15 - y from the first equation.
z = 12 - (15 - y)
z = 12 - 15 + y
z = y - 3 (Equation 1)
Now substitute y - 3 for z in the original second equation.
y = 13 - z
y = 13 - (y - 3)
y = 13 - y + 3
2y = 16
y = 8
Substitute 8 for y in Equation 1.
z = y - 3
z = 8 - 3
z = 5
Substitute 5 for z in the original third equation.
5 = 12 - x
-7 = -x
x = 7
Solution: x = 7; y = 8; z = 5
The hypotenuse of a right triangle is always the side opposite the right angle. it is the longest side in a right triangle. the other two sides are called the opposite and adjacent sides. these sides are labeled in relation to an angle
Add 1/4 by 1/6 and get 5/12 so then you have 7/12 with black hair.
