Area = height * length * width
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
Answer: y = 1/4x + 7
Step-by-step explanation:
230cm^2
Seperate the triangle, 9x 20 the divide by 2, 90.
Then the rectangle is 7x20 so 140, and add them together to get 230
