Which method listed below could not be used to prove that two triangles are congruent? a. Prove all three sets of corresponding sides congruent b. Prove all three sets of corresponding angles congruent c. Prove that two sides and an included angle of one triangle are congruent to two sides and an included angle of the other triangle d. Prove that two angles and an included side of one triangle are congruent to two angles\e of the other triangle.

On a piece of paper graph f(x)=5•(0.4)^x

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?