Answer:
1800
Step-by-step explanation:
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To set up a venn diagram, you need the following details below
- Set A = ( 3, 6, 9, 12, 15 )
- Set B = ( 1, 3, 5, 7, 9. 11, 13, 15 )
- A∩B = ( 3, 9 )
- U = (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16)
<h3>Meaning of a set and a venn diagram</h3>
A set is the orderly collection of elements, material, numbers and items that satisfy a condition.
A set could be finite or infinite.
A venn diagram is a diagramatic representation of a set using circles. it mostly represents a finite set.
In conclusion, you can use the details above to draw your venn diagram.
Learn more about venn diagrams : brainly.com/question/20795347
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When we say two angles are complementary, we mean that they add up to a right angle – 90 degrees. Now, we haven’t been given either of the angles directly, but we’ve been given their relationship, and we’ve been given the fact that they’re complementary. If we call the angle’s complement θ, we can express the fact that our angle is 78 degrees less than that with the expression (θ-78). Putting our information together, we have:
θ+(θ-78)=90
2θ-78=90
From there, it’s fairly straightforward algebra; just solve for θ. Remember though, the answer they’re looking for is the (θ-78) term, so make sure to evaluate that once you’ve found θ.
Ratio of boys to the girls
= No of boys ÷ No of girls
=15÷18
=5:6