Solve 4(x+2) - 5 = -21

your answer will be -6

Step-by-step explanation:

4x+8-5= -21

8-5=3

4x + 3 = -21

subtract three from both sides

4x= -21

-21 divided by 4

= -6

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i