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

When ∆rst is translated 4 units down, what are the apparent coordinates of t’? give 15 points

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?