Express 2a^-4/ 5b^-2 with positive exponents.

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

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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.