In a random sample of 160 high school students, 64% of the students participated in summer camp activities. the estimate had a margin of error of 2.5% at a 95% confidence level. which of the following could be the number of high school students who participated in summer camp activities?

(hurry! ) which expression is equivalent to the following complex fraction?

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.

Write the standard form of an equation with (see picture below)