What is f. 8=8f because i dont understand it

Mathematics

1 answer:

Digiron [165]2 years ago

4 0

Answer:

F=1

Step-by-step explanation:

8=8x1

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Answer:

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-15=-4m+5<br><br>8n+7=31<br><br>-10=10(k-9)

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$-15=-4m+5\ \ \ |both\ sides\ /+4m\\\\4m-15=5\ \ \ \ |both\ sides\ /+15\\\\4m=20\ \ \ \ |both\ sides\ /:4\\\\\underline{\underline{m=5}}$

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Four brothers and their sister have the average age 7. Four brothers have the average age 6. How old is the sister?

AnnyKZ [126]

Answer:

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Step-by-step explanation:

If four brothers have the average age 6, then the sum of their ages is

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