From the information provided, you know that the profit would be equal to the price per car for the number of cars washed minus the amount you spent on supplies, which would be:
P=6x-15, where:
P is the profit
x is the amount of cars washed
Also, you know that the profit is 93, so you can replace P in the formula and solve for x:
93=6x-15
93+15=6x
108=6x
x=18
According to this, the answer is that you and your friends washed 18 cars.
The ratio is 4/5 girls to boys. if there are 60 girls you would divide 60 by 4 and get 15. you would then multiply that 15 by 5 to get the number of boys in the choir. your answer would be 75 because 15x5=75. there are 75 boys in the choir
Vertices are the "points" of a 2D figure. In this case, we see the 2D figure as a triangle. There are 3 points on the triangle, so there are 3 vertices.
