Answer:
B is correct
Step-by-step explanation:
I think you don't need a calculator here. :) Try to figure out next time!
It is C. r=6
3 * 6 = 18 + 2 =20
Answer:
60 points in 5 games
Step-by-step explanation:
plug the numbers of points scored into the top boxes, so the boxes should look like ( [8]+[11]+[12]+[16]+[n] ) then plug in the number of games he played in the bottom box [5] so 8+11+12+16+n all divided by 5 has to = 12
5x12 = 60
n= 60-8-11-12-16 n= 13
Step-by-step explanation:
if the 2 matrices are inverse, then their product must be the identity matrix
1 0
0 1
so,
m×3 + 2×-7 = 1
7×3 + 3×-7 = 0
m×-2 + 2×m = 0
7×-2 + 3×m = 1
that means we have to solve only
3m - 14 = 1
3m = 15
m = 5
