Answer:
2/7x +3=9
x=21
Step-by-step explanation:
Let the unknown be x.
Take 3 to the other side so: 2/7 multiplied by x= 6
Divide 6 by 2/7 to get the answer;
Therefore x=21
Sub back into equation to check answer.
Answer: k=G/ 3 pi
Step-by-step explanation:just make k the subject of the formulae by dividing through by 3 pi
Answer:
-1/2
Step-by-step explanation:
Answer:20
Step-by-step explanation:
They both have 20 as a factor.