Answer:

Step-by-step explanation:
we know that
To find out how long is Ms.Smith’s bulletin board, multiply Mrs . Porcelli’s bulletin board by 3
so

but first convert mixed number to an improper fraction
so

substitute

convert to mixed number

I believe the answer is B.
Step-by-step explanation:
2x-12x+36 =90
-10x + 36 = 90
-10x =54
x = - 5.4
Answer:

Step-by-step explanation:
Given

Required
Determine KBC
Since BK is a bisector of ABC at B,
this implies that:

Substitute 28.3 for ABK

Reorder

area=base x height so i’m thinking it’s 4x17=68