4b+3=-9
whaT DOES B equal

result bellow

Step-by-step explanation:

b= -4.

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The answer is -3.

Step-by-step explanation:

Subtract 3 from the both sides, and you'll have 4b=-12. When you divide the both sides with 4, you'll get b=-3.

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: