​If the dimensions of a cone are halved, what affect does it have on the volume? A. ​It is 2 times as great.
B. ​It is 1/4 times as great.
C.​ It is 1/2 times as great.
​D. ​It is 1/8 times as great

PLZ ANSWER QUICKLY AND ACCURATELY WILL MARK BRAINLIEST

Ineed with number 17 i don’t get it at alll

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Find the nonpermissible replacement for binthis expression. b2/5b +5