Last problem 100% of my next grade anyone

z =-8.660254038 -5i

Step-by-step explanation:

z = |z| cos theta + |z| i sin theta

  We know |z| and theta

z = 10 cos 210 +10 i sin 210

z = 10 (-sqrt3)/2 + 10i (-1/2)

z = -5 sqrt(3) -5i

or approximately

z =-8.660254038 -5i

mk./km: lm

step-by-step explanation:

,mlmlm

; mk

lk

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3