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
The answer is 7/10 the common demontior is 10 so the numbers change to 2/10 + 5/10 witch equals 7/10
Answer:
2/(3c+9)
Step-by-step explanation:
The only thing you have to do is distribute the 3 to (c+3) and that is 3c+9 so the answer is 2/(3c+9).
Check the picture below. Count them up.
Answer:
1001-70-336=595
Step-by-step explanation:
i think..