II. Match the math sentences that count on and back by tens.

38 + 30 = ?
48 + 40 = ?
38 + 20 = ?
58 - 20 = ?
68-30 = ?
88-40 = ?

c > -10.55

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)