63. The fourth proportional to 5,8,15 is
a)18
6/24
c)19
d)20​

24

Step-by-step explanation:

a:b::c:d

a/b=c/d (eq 1)

let a=5, b=8, c=15, d=x

Not put values in eq 1

5/8 = 15/a

By cross multiplication we get:

5xa = 15x8

5a = 120

Dividing by 5 on both sides we get

5a/5 = 120/5

a = 24

Therefore The fourth proportional is 24

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

answer: im sorry i dont get it

step-by-step explanation: