Find 5/22+3/7+(-8/21)+(-6/11)

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Which term below correctly completes the following sentence? if a function has a vertical asymptote at a certain x value, then the function is what at that value