One third of a number is added to one tenth of a number . The result is equal two times the square of the number. Find the number.
Answers
Answered by
1
Answer:
If one third of a number is added to itself and gives 10, what is the number?
Let n = the unknown number.
One-third of a number added to itself gives 10 can be translated mathematically into the following equation:
(1/3)n + n = 10
3[(1/3)n + n] = 3(10)
3(1/3)n + 3n = 3(10)
(1)n + 3n = 30
n + 3n = 30
(1 + 3)n = 30
4n = 30
(4n)/4 = 30/4
(4/4)n = 30/4
(1)n = 7½
n = 7½
CHECK:
(1/3)n + n = 10
(1/3)(7½) + 7½ = 10
(1/3)(15/2) + 15/2 = 10
5/2 + 15/2 = 10
(5 + 15)/2 = 10
20/2 = 10
10 = 10
Therefore, 7½ is indeed the desired, correct numbe
Answered by
0
Answer:
earth is a planet in the universe
it is the only planet that supports life
it is the 3rd planet in the solar system
Similar questions