Classify Δ ABC with vertices A(-2, -1), B(-1,3), C(2,0) as scalene, equilateral, or isosceles

Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long.at what angle is the sun above the horizon at that time?

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Given the numbers c = –3 and d = 4, which statement is true? a. |–c| = 3 and |–d| = –4 b. |–c| = 3 and –|d| = –4 c. –|c| = –4 and –|d| = 3 d. |–c| = 3 and –|d| = 4