What are the volume and the surface area of the willis tower

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9