Mrs DeNaples is in a hot air balloon. Firdavs and Martiano are holding the balloon to the ground with ropes. Firdavs' rope is 148 ft. long and makes a 43 degree angle with the ground. Martiano's rope makes a 61 degree angle with the ground. How long is Martiano's rope?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations