Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
Secondary 1 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
please help thankss
Date Posted: 3 years ago
Views: 215
5 and 9 have nothing to do with each other (because there are no common factors in themselves).
If 5 and 9 are factors of a number, then of course 45 must also be a factor (because a number which is divisible by both 9 and 5 should also be divisible by 45).
But, it is true that all multiples of 45 are also multiples of 1. 3. 5. 9. and 15 (obviously).
So, 15 is also a factor of that number.
If 5 and 9 are factors of a number, then of course 45 must also be a factor (because a number which is divisible by both 9 and 5 should also be divisible by 45).
But, it is true that all multiples of 45 are also multiples of 1. 3. 5. 9. and 15 (obviously).
So, 15 is also a factor of that number.
See 1 Answer
Let x be the number with factor of 5,9 and 15
5×( )=x
9×( ) = x
15×( ) =x
5×9=45
9×5=45
15×3=45
Therefore, its true as the number 45 has the factor of 5,9,15.
5×( )=x
9×( ) = x
15×( ) =x
5×9=45
9×5=45
15×3=45
Therefore, its true as the number 45 has the factor of 5,9,15.
360 Tutoring Program