Which expression is equivalent to a2x2-2cx2 +a2y-2cy? (Polynomial Functions - Factoring)
(x2-y)(a2-2c)
(x2-y)(a+c)
(x2+y)(a2-2c)
(x2+y)(a+c)
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Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

14. (05.02 lc) what is the value of y in the solution to the following system of equations? (5 points) 2x + y = −4 5x + 3y = −6

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?