Last year, 42 new houses were built in a neighborhood. So far this year, 5/7 of them have been sold. How many new houses have been sold this year?

30

Step-by-step explanation:

illl explqain if you need it

yes

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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)