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Yesterday, 1/4 of 80 =20 gave their speeches, so there are 80-20=60 students left.
Today, 2/5 of 60=24 students gave their speeches, so there are 60-24=36 students who still haven't give their speeches
another way to think of it is 80*(1- 1/4)*(1- 2/5)=80*(3/4)*(3/5)=36
N = 5
These are similar triangles so their sides are proportional. The scale factor is the smaller triangle to the large triangle is
5/12.5 = 4/10 = 2/5
So if AB corresponds to QR (2 corresponds to n) then n = 5
Answer:
A.2304
B.5625
C.6776
Step-by-step explanation:
The easiest way to show you is by using calculator. If you can't, try using Khan Academy if you want.
Answer:
k-n
Step-by-step explanation:
