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Natalija [7]
3 years ago
9

The values of x and y are directly and one pair of values are given.

Mathematics
1 answer:
Anestetic [448]3 years ago
7 0

Answer:

The relation is y = -1.5x

Step-by-step explanation:

x and y are directly proportional:

This means that the equation is given by:

y = ax

In which a is the multiplier that relates these two variables.

x= -4, y =6

We use this to find a. So

y = ax

6 = -4a

a = -frac{6}{4}

a = -1.5

So

The relation is y = -1.5x

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Vesnalui [34]

Answer:

solution:-We know that for any two finite sets A and B, n(A∪B)=n(A)+n(B)−n(A∩B).

Here, it is given that n(A)=20,n(B)=30 and n(A∪B)=40, therefore,

n(A∪B)=n(A)+n(B)−n(A∩B)

⇒40=20+30−n(A∩B)

⇒40=50−n(A∩B)

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⇒n(A∩B)=10

Hence, n(A∩B)=10

Step-by-step explanation:

hope it helps you friend ☺️

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Answer:

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