3/x=x-2/4 multiply each side by the common denominator to find the quadratic equation equivalent to this equation
a)x²-2x-12=0
b)x²-4x+12=0
c)x²-2x-9=0
d)x²-4x-12=0

Combine like terms to make a simpler expression 3z+z

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

Afew weeks ago, vera bought 5 apples from her local farmers' market. today, she bought 4 apples. what is the percent of decrease in the number of apples bought?