Im doin another give away for brainliest and points so here is my question the first one to answer is gettin brainliest <3 :Use rounding to estimate the product. Is your estimate an underestimate or an overestimate? 11.45 × 5

underestimate
overestimate

Arandom high school question but a hard one

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so