The midpoint of a segment with endpoint (8, a) and (b, 4) is (−1, −1). What are the values of a and b?

a = 6, b = 10
a = 10, b = 6
a=−10, b=−6
a=−6, b=−10

1. are the triangles similar and if so why? what is the value of x? show your work.

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

What is the lcm of 16 and 40 ? 24 and 40 ?