Answer:
25n
25*n
Step-by-step explanation:
let n represent the number of students
20 there are 20 football players
Answer:
The area of the shaded region is
Step-by-step explanation:
we know that
The area of the shaded region is equal to the area of the circle color blue minus the area of the circle color green
The area of the circle is equal to
so
assume
10 meters = 1 dekameter
So multiply by 4
10 x 4 = 40
40 meters in a dekameter
Answer: 19 pieces at original price and 71 pieces sold at reduced price.
Let x=number sold for original price, $9.50 and y = number sold at reduced price $7.50.
So we have 2 equations.
x+y=90 => x=90-y (eqn 1)
9.5x + 7.5y = 713. (eqn 2)
sub (eqn 1) => (eqn 2)
9.5(90-y) + 7.5y = 713
855-9.5y+7.5y = 713
855-713 = 2y
142 = 2y
y = 142/2
y = 71 (eqn 3)
sub (eqn 3) => (eqn 1)
x = 90 - 71
x = 19