Could i have the answer to factorise 16a+12b

What is the value of the expression below? (81^2)^1/8

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank