#7 is the easiest one.
a + bi = -9 + 4i
see the expression on either side matches up so..
a = -9 and b = 4
2(30+x-6)-20
This should help, comment if you have any further questions <3
Answer:
<u><em>D. </em></u>
Step-by-step explanation:
This is because you find the unit rate for each typist.
Answer : D
How to: use the properties of radicals 5 squared x 6 then simplify the root
