Which value, when placed in the box, would result in a system of equations with infinitely many solutions? y = 2x – 5 2y – 4x = –10 –5 5 10

Using d, e, and f as values on a triangle and d being 60 degrees, what is the value of e and f if d is 60 degrees? also, what do you notice about the values of e and f?

Given that abcd is a rhombus, what is the value of x?

21 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 { (separate the solutions with a comma)