Red ribbons are wrapped around all the columns of a building. each ribbon does not overlap itself. each column has a radius of 3 feet. if all the ribbons are taken off the columns and attached end to end, they would measure 144 pi feet long. how many columns does the building have? a)8 b)16 c)24 d)40 plzz

Hello!

If this long ribbon measures 144 feet, you can see, it was only multiplied by one number, which has the be the diameter of a column to get our circumference. If we divide this by our diameter 6 (diameter is double the radius, 3), we get our answer below.

144/6=24

Therefore, our answer is C) 24.

I hope this helps!

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

y do u put "subscirbe to ence" on a app for ppl who need with their work?