Decrease 20 by 1/4 how do You do it

You will divide 20 by 4 so it is 5

15

Step-by-step explanation:

20/4 = 5 this is 1/4 of 20

but youre looking for a quater off, so 20-5 = 15

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.