Answer:
B
Step-by-step explanation:
Using the rule of radicals
= 
Thus
(
)² =
×
=
=
= a → B
Let x = the unknown number
five more than a number = twice the number
x + 5 = 2x
5 = 2x - x
5 = x
( Balance method is used to solve )
substitution
x + 5 = 2x
5 + 5 = 2 x 5
10 = 10
answer : the unknown number is 5
Answer:
Step-by-step explanation:
a.6/1/2=x
b. 12