1) which of the following arithmetic sequences have a common difference of 2 1/2? a) -4,-1.5,1,3.5,6,8.5 b) 2 1/2, 4 1/2, 6 1/2, 8 1/2, 10 1/2 c) 1.5,3,4.5,6,7.5 d) -5, -3 1/2, -1 1/2, 2 2) in this arithmetic sequence, what is the common difference? 11, 8, 5, 2, 3 -3 5 -1

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

What is the base of 1/9 to the power of 2

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.