I need your help please I don’t understand this

Mathematics

2 answers:

hammer [34]3 years ago

6 0

You would replace “4” for the letter “y” so it would be 5x+7(4)=4. Then you would do 7(4) which is 28. and then you would have 5x+28=4. I hope this helps !

Step2247 [10]3 years ago

3 0

The answer is y = -5/7x + 4/7! The first step is to subtract the 5x so it’s on the other side of the equal sign. So now the equation is 7y = -5x + 4. Then divide each of them for 7

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1)How many ways can the letters in the word BOOKKEEPER be arranged? (Must show set-up )

sergeinik [125]

Question 1

There are 5 letters (B, O, K, E, R) and there is a total of 10 letters to make up the word.
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Question 2

There are seven swimmers in total.
There are $\frac{7!}{(7-1)!1!}$ ways of choosing the first winner, which is 7 ways
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There are $\frac{5!}{(5-1)!1!}$ ways of choosing the third winner, which is 5 ways
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Question 3

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