Are the expressions 5+5+5+ x plus x plus x plus x and 4(5+x) equivalent? if so write another expression that is equivalent to both of them if not explain why not

What is the slope of the line (-7,2) (4,6)

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

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?