X2+xy=20, y2+xy=30, Solve for xy.

Which of the following constants can be added to x2 + x to form a perfect square trinomial?

What is the probability of rolling an even number first and an odd number second? StartFraction 1 over 9 EndFraction StartFraction 1 over 6 EndFraction One-fourth One-half

One number is 800 less than 3 times the other, and their sum is 1,200. Find the numbers. Which of the following equations can be used to solve the problem if the smaller number is x? 2x - 800 = 1,200 3x - 800 = 1,200 4x - 800 = 1,200

The ratio of boys to girls is 8 to 6 how many times as many girls as boys are there

Miguel is earning extra money by painting houses. He charges a 200$ fee plus 12$ per can of paint needed to complete the job.

What is the range of f (x) = - x2 4, if the domain is {2,0,1}? A) {0,3,5} B) {0,4,3} C) {0,4,5} D) {8,4,3}

There are 90,000 famillies who donated to Nina's Fund. They donated 40 dollars each. How many dollars were raised?

Sharon called 3 friends on Friday. On Saturday, each of those 3 friends called 3 different friends. On Sunday, each person who was called on Saturday called 3 different people. How many friends were called on Sunday?

A woman 5 9/10 inches taller than her son. The son is 66 3/4 inches tall. How tall is the woman?

At a plant, 160,000 tons of petrochemicals are required to produce 100,000 tons of plastic. How many tons of petrochemicals are required to produce 5,000 tons of plastic? F. 8,000 G. 10,000 H. 16,000 J. 80,000 K. 100,000