given:
ab = cd
bc = da

prove:
b = d

which of the following triangle congruence theorems would be used in this proof?

sss
sas
asa

Classify the following triangle check all that apply

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.