There are 20 people in a party. 4 of them left. Then, half of them left. How many people are left in the party?

Mathematics

2 answers:

pickupchik [31]4 years ago

5 0

Answer:8. 20-4=16 16÷2=8

Step-by-step explanation:

Anna11 [10]4 years ago

3 0

Answer:

Step-by-step explanation:

First you subtract 20 by 4. Then you get 16. 16 divided by 2 gets you 8. 8 is the answer.

Hope this helps dude

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nordsb [41]

Answer:

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Step-by-step explanation:

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Answer:

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zhenek [66]

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Answer:

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Step-by-step explanation:

Writing equations from words is mostly a matter of understanding what the English words mean.

If the first number is x, then the square of the first number is x². That is said to be equal to the sum of the second number (y) and 16:

x² = y + 16 . . . . the first equation

The wording "the difference of A and B" is usually intended to be interpreted to mean A-B. Here, we have the difference of 4 times the second number (4y) and 1, so ...

4y -1

This is equal to the first number (x) multiplied by 7, so ...

4y -1 = 7x . . . . the second equation

These can be solved a variety of ways. When no method is specified, I like to use a graphing calculator. It shows the only integer solution for this pair of equations is ...

(x, y) = (5, 9)