Which value of x makes the two matrices inverses of each other?

12 3 4 5 6 7 8 9 10 time remaining 57: 53 a drink was spilled on the math problem shown below. ron remembers that the second factor was a decimal. based on the placement of the decimals in the first factor and the product, which must be true of the second factor? the decimal could be zero. the decimal could be two-tenths. the decimal could be five-tenths. the decimal could be seven-tenths. mark this and return save and exit next submit