The other person did not explain so I will:
(68+79+74)= 221/3 =73.7
80 x 4 = 320
320-221 = 99
He must get 99 on his 4th test.
Thanks
Answer:
5 prime tier
Step-by-step explanation:
You multiple how ever many layers you have. Like let's say you have 5 layers you would just go 6 times 6 times 6 and so on
The altitude is the mean proportional between the left and right parts of the hyptenuse
20/m = m/8
m² = 20 · 8
m² = 160
m = √160
m = 4√10
