A+b/a-b=5/3 what are the following ratios? 3a:2b
2 answers:
Answer:
3a:2b=6:1
Step-by-step explanation:
given, =
3(a+b)=5(a-b)
3a+3b=5a-5b
2a=8b
a=4b
3a:2b=3(4b):2b=12b:2b=6:1
hence 3a:2b=6:1 answer
Answer:
3 a : 2 b = 6 : 1
Step-by-step explanation:
<em> =
</em>
<em>3 ( a + b) = 5 ( a - b) </em>
<em>3 a + 3 b = 5 a - 5 b </em>
<em>5 b + 3 b = 5 a - 3 a </em>
<em> 8 b = 2 a </em>
<em> 2 a = 8 b</em>
<em><u>a = 4 b</u></em>
<em>3 a = 3 × 4 b</em>
<em><u>3 a = 12 b</u></em>
<em>3 a: 2 b = 12 b : 2 b</em>
<em>3 a : 2 b = 6 : 1</em>
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Solution :
Given :
X = the number of boys in a family of four children
Families having four children are chosen randomly.
The gender distribution in the four child family are equally probable.
Thus,
X P(X) CDF
0 = 1/16
1 = 1/4
2 = 3/8
3 = 1/4
4 = 1/16 1
