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irga5000 [103]
3 years ago
8

220 students were asked if they liked chocolate or vanilla ice cream. 140 said they liked chocolate and 120 said they liked vani

lla. How many students liked both chocolate and vanilla? A. 260
B. 100
C. 80
D. 40
Mathematics
1 answer:
Flura [38]3 years ago
6 0

Answer: D. 40

Step-by-step explanation:

Given: Number of students liked vanilla or chocolate ice cream =n(V\cup C)=220

Number of students liked chocolate =n(C)=140

Number of students liked vanilla=n(V)=120

Now,  Number of students liked vanilla and chocolate ice cream is given by :-

n(V\cap C)=n(C)+n(V)-n(V\cup C)\\\\\Rightarrown(V\cap C)=140+120-220\\\\\Rightarrown(V\cap C)=260-220\\\\\Rightarrown(V\cap C)=40

Number of students liked vanilla and chocolate ice cream= 40

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3 years ago
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Rom4ik [11]

Answer:

It takes 2.8 seconds for the ball to fall 215 ft.

Step-by-step explanation:

We are given a position function s(t) where s stands for the number of feet the ball has fallen, so we have to replace s with the given value of 215 ft and solve for the time t.

Setting up the equation.

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s(t) =16t^2+32t

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From the previous equation we can move all terms in one side to get

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At this point we can solve for t using quadratic formula.

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Replacing on the quadratic formula we get

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3 years ago
What is one and one fourth times 30
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Hope that this helps and makes sense, Enjoy!=)
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