4/3 Z - 1/2=0
4/3z =1/2
Z=1/2 x 3/4
Z= 3/8
Answer:
-4
Step-by-step explanation:
The formula of an arithmetic sequence is nth term=a+(n-1)d. First term is a and common difference is d.
Let's plug our info in.
-20=12+(9-1)d
-20=12+8d
Subtract 12 from both sides.
-32=8d
Divide both sides by 8.
d=-4
Have a wonderful day! :D
If BD is congruent to BC, that means that the sides are equal, so their angles are too.
6x-9 = 3x+24
3x = 33
x = 33/3
x = 11
Angle BCD:
6×11-9 = 66-9 =57°
Angle BDC:
3×11+24 = 33+24 = 57°
Angle B:
x = 180° - 2×57°
x = 66°
Answer:
-3
Step-by-step explanation:
