1.(a) use the fundamental theorem of algebra to determine the number of roots for 2x^2+4x+7
(b) what are the roots of 2x^2+4x+7 ? show your work.

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Explain how you can use the associative property to evaluate (7x50)x4.

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap