Solve each of the following equations for the missing variable. -3x + 9 = -18 x = 3 x = 3 x = -9 x = -9 x = -3 x = -3

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

What does independent variable and dependent variable mean in math?