If triangle pqr = triangle tsr, what are the congruent corresponding parts? see the link for reference.

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?