Which shows a perfect square trinomial?

50y2 - 4x2

100 - 36x2y2

16x2 + 24xy + 9y2

49x2 - 70

david a high school senior was wondering if the cost of attending college is worth the expense. he collected the following data about the annual salaries in thousands of dollars, for college graduates and highschool graduates

How many solutions does the following equation have 2x-5=.5 (4x-10)

A truck carries apples, grapes, and blackberries in the ratio of 4:3:4 if the apple weighs 160 pounds how much does the truckload of fruit weigh in total

A First City Bank accepted a $3,500, 5%, 120-day note dated August 8 from a Capstone Company in settlement of a past bill. On October 11, First City discounted the note at Park Bank at 6%. a. What is the note's maturity value? (Use 360 days a year.

There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?

Use the fundamental theorem of algebra to determine the number of roots for 2x^2+4x+7

G Chairish-Is-The Word, Inc., manufactures top-end hardwood chairs that are sold through a variety of retail outlets. The most popular model sells (wholesale) for $400 per chair and costs $300 to make.

What is eighty percent of seventy.

A science class has 6 girls and 2 boys in the seventh grade and 5 girls and 7 boys in the eighth grade. The teacher randomly selects a seventh grader and a eighth grader from the class for a competition.

A person can reaf 24 pages of a book in 1/3 of an hour what is this lersons reading rate.