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scoundrel [369]
3 years ago
14

If n(A ∪ B)=49, n(A ∩ B)=24, and n(B)=27, find n(A).

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

Answer:

46

Step-by-step explanation:

n(A U B)= n(A) + n(B) - n(A ∩ B)

n(A)= n(A U B) - n(B) + n(A ∩ B)=49-27+24 =46

Hope, this helps you.

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Answer:

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Determine the missing side of the square.
Gekata [30.6K]

Answer:

The missing side is 9cm.

How I got my answer:

1. Squares have equal sides.

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Kevin and Randy Muise have a jar containing 73 ?coins, all of which are either quarters or nickels. The total value of the coins
inna [77]

Answer:

24 quarters and 49 nickels

Step-by-step explanation:

This situation has two unknowns - the total number of nickels and the total number of quarters. Because we have two unknowns, we will write a system of equations with two equations using the two unknowns.

  • n+q=73 is an equation representing the total number of coins
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We write the first equation in terms of q by subtracting it across the equal sign to get n=73-q. We now substitute this for n in the second equation.

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3.65-0.05q+0.25q=8.45

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After simplifying, we subtract 3.65 across and divide by the coefficient of q.

0.20q=4.8

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We now know of the 73 coins that 24 are quarters. To find the number of nickels, we subtract 24 from 73 and get 49 nickels.

4 0
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What is the mix number of 22/3
viva [34]
The answer is 7 1/3 hope it helps!
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