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Is this trinomial a trinomial square?

x2 + 18x + 81.

What is X=5y because I need it for a math problem

1/2k - 15 + 3/2k - 5 how do i simplify this expression

Mary Hernandez earned $43,000 in taxable income. She figured her tax from the single taxpayer table above.

Round 6 and 81 thousandths to the nearest hundredth.

5 pints of blue paint with 2 pints of yellow paint make green how many pints of blue paint are needed to make 28 pints of green paint find the rate as a unit rate

Mary runs 10/4 miles everyday and Beth runs 5/2 miles everyday. Who runs further?

Probability: There are 11 shirts in your closet, 6 blue and 5 green. You randomly select one to wear on Monday and then a different one on Tuesday. You wear blue shirts both days.

If a is a nonnegative real number, then which inequality statement best describes a?

Which equation has the steepest graph? A. Y = 7x + 3 B. Y = 8x - 1 C. Y = - 10x - 4 D. Y = - 2x + 6

in 1996 there were approximately 275 students in the Delaware high school band in 2002 that number increased to 305 find the annual rate of change in the number of students in the band?