Answer:
Option A. -6.5
Step-by-step explanation:
we have

Solve for r
That means ---> isolate the variable r
Combine like terns left side of the equation

Divide by 0.5 both sides


B2-7b+12=0
(b-3)(b-4)=0
b= 3 or 4
Answer:
A)26
Step-by-step explanation:
12 nin dogal sayi bolenleri 1,2,3,4,6 ve 12 dir yani ucgen 6 dir
20 nin en kucuk kati 20 yani kendisidir(20 kendisinin 1 katidir)
Answer:

B. 30
Step-by-step explanation:
First, you multiply by 5 from both sides of equation.

Simplify, to find the answer.

, which is our answer.