How do I solve 4x-y=-9 3x-3y=0 by elimination

Which shows a perfect square trinomial? 50 y squared minus 4 x squared 100 minus 36 x squared y squared 16 x squared + 24 x y + 9 y squared 49 x squared minus 70 x y + 10 y squared

What are two numbers that are the same equal to 28

The length of a room is 19 1/2 feet. When using 1 / 4 inch = 1 foot scale, what would be the length of the wall on a floor plan?

Ms. Parker baked 6 dozen cookies. She gave 2 dozen cookies to her sister, 1 À dozen cookies to her brother and kept the remaining cookies for herself. What amount of the cookies did she keep for herself?

Value: four and nine tenths

You drive 70 miles per hour but then slow your speed by 15 miles per hour. you then return to your speed of 70 miles per hour. which expression shows how your speed changed?

Given r = 8 and ø=1.85pi, find the Cartesian coordinates. Check your answer. a. (7.13, - 3.63) C. (-7.08, 3.67) b. (7.08, - 3.67) d. (-7.80, - 3.67)

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The solution set of n2 - 14n = - 45 is [ ]

Peter is 2 years older than Winnie. Peter's age is 16 years less than seven times Winnie's age. The equations below model the relationship between Peter's age (p) and Winnie's age (w): p = w + 2 p =

Name a fraction equivalent to 2/3