n + q = 35
n = 35-q
0.05n + 0.25q = 8.15
0.05(35-q) +0.25q = 8.15
1.75 -0.05q + 0.25q =8.15
1.75 + 0.20q = 8.15
0.20q = 6.40
q = 6.40 / 0.20 = 32
32 quarters and 3 nickels
They need 10 tutors if the academy has 120 students.
Answer:
$4.00
Step-by-step explanation:
Mark down it by 25% three times will be 75%, so when you multiply the two, it becomes 75%. do 16/4 to get the reduction for 25%,, and you get 12. Then dive it by for 2 more times to get $4
O centroid
Step-by-step explanation:
In geometry, a median of a triangle is a line segment joining a vertex to the midpoint of the opposite side, thus bisecting that side. Every triangle has three medians, one from each vertex, and they all intersect each other at the triangle's centroid.
