If 36 x52 y8
is divisible by 9, then x is
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Answer:
Step-by-step explanation:
MEP Y8 Practice Book A 30 2.2 Prime Factors A factor tree may be used to help find the prime factors of a number. Example 1 Draw a factor tree for the number 36. Solution Start with 36 and then: split 36 into numbers 9 and 4 that multiply to give 36 as shown in the factor tree opposite; repeat for the 9 and the 4, as shown on the factor tree
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answer:
Factors of 36 that add up to numbers
Factors of 36 that add up to 91 =1 + 2 + 3 + 4 + 6 + 9 + 12 + 18 + 36
Factors of 36 that add up to 3 = 1 + 2
Factors of 36 that add up to 6 = 1 + 2 + 3
Factors of 36 that add up to 10 = 1 + 2 + 3 + 4
Factor of 36 in pairs
1 x 36, 2 x 18, 3 x 12, 4 x 9, 6 x 6, 9 x 4, 12 x 3, 18 x 2, 36 x 1
1 and 36 are a factor pair of 36 since 1 x 36= 36
2 and 18 are a factor pair of 36 since 2 x 18= 36
3 and 12 are a factor pair of 36 since 3 x 12= 36
4 and 9 are a factor pair of 36 since 4 x 9= 36
6 and 6 are a factor pair of 36 since 6 x 6= 36
9 and 4 are a factor pair of 36 since 9 x 4= 36
12 and 3 are a factor pair of 36 since 12 x 3= 36
18 and 2 are a factor pair of 36 since 18 x 2= 36
36 and 1 are a factor pair of 36 since 36 x 1= 36
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similar questions:
Write all the factors of the following numbers:
(a) 24
(b) 15
(c) 21
(d) 27
(e) 12
(f) 20
(g) 18
(h) 23
(i) 36
Answer
(a)
24
=
1
×
24
=
2
×
12
=
3
×
8
=
4
×
6
=
6
×
4
Therefore, Factors of 24 = 1, 2, 3, 4, 6, 12, 24
(b)
15
=
1
×
15
=
3
×
5
=
5
×
3
Therefore, Factors of 15 = 1, 3, 5, 15
(c)
21
=
1
×
21
=
3
×
7
=
7
×
3
Therefore, Factors of 21 = 1, 3, 7, 21
(d)
27
=
1
×
27
=
3
×
9
=
9
×
3
Therefore, Factors of 27 = 1, 3, 9, 27
(e)
12
=
1
×
12
=
2
×
6
=
3
×
4
=
4
×
3
Therefore, Factors of 12 = 1, 2, 3, 4, 6, 12
(f)
20
=
1
×
20
=
2
×
10
=
4
×
5
=
5
×
4
Therefore, Factors of 20 = 1, 2, 4, 5, 10, 20
(g)
18
=
1
×
18
=
2
×
9
=
3
×
6
Therefore, Factors of 18 = 1, 2, 3, 6, 9, 18
(h)
23
=
1
×
23
Therefore, Factors of 23 = 1, 23
(i)
36
=
1
×
36
=
2
×
18
=
3
×
12
=
4
×
9
=
6
×
6
Therefore, Factors of 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36
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