Answer:
<em>There are </em><em>70</em><em> students only in chorus.</em>
Step-by-step explanation:
Total number of students is 250
Out of 250, 180 students took band.
And 60 took band and chorus, i.e this is the intersection of the 2 groups.
The Venn diagram is attached below.
So, the number of students who took only band = 180-60 = 120
Total number of students or sum of the 3 regions is 250.
So, the number of students who took only chorus = 250-180 = 70
Trapezoid since the sides are the same but the top and bottom are not
110 horses can be found in one day with 44 bales of hay. If each horse needs 2/5 bales of hay each day, just convert 2/5 into a decimal (0.4) and divide 44 by 0.4 to get 110. (That's a lot of horses!)
There are 13 diamonds in the deck, so 
ways of drawing 3 diamonds.
There is a total of 
ways of drawing any 3 cards from the deck.
So the probability of drawing 3 diamonds is
where 
.
I do not have a video but to convert a fraction to a decimal, you divide the numerator by the denominator or make the denominator equal to one hundred. For example, to convert 1/5 to a decimal, you write 1/5 as 20/100, which as a decimal is written as .2
