(15−4i)(6−3i)=a+bi In the equation above, a and b are real numbers and i=−1‾‾‾√. What is the value of a?

a=

the first one

step-by-step explanation:

just id the test.

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)

20 feet per second

hope i

-lavira : )