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3 years ago

Can somebody help please?????????

Mathematics

1 answer:

Fudgin [204]3 years ago

8 0

Answer:1/5 = 2/10

Step-by-step explanation:

you just have to multiply by 2. Since the 1/5 turns into ?/10, you can assume that you multiply the 5 by 2, and whatever you do to the bottom, you do to the top. So you would multiply the 1 by 2 and you would end up with 2/10.

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Step-by-step explanation:

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Read 2 more answers

The cost of 7 chairs and 2 tables is equal.If the cost of 6 chairs and 5 tables is 10575, find the cost of 12 chairs.

Igoryamba

Answer:

5400

Step-by-step explanation:

Let x represent the cost of a chair and y represent the cost of a table. We can use this to set up a system of equations:

7x=2y

6x+5y=10575

We can solve this system using substitution.

Start by rewriting the first equation in terms of x.

$7x=2y\\\text{Divide both sides by 7}\\x=\frac{2}{7}y$

Substitute this into the second equation:

$6(\frac{2}{7}y)+5y=10575\\\frac{12}{7}y+5y+10575\\\frac{12}{7}y+\frac{35}{7}y=10575\\\frac{47}{7}y=10575$

Multiply both sides by 7

$47y=74025$

Divide both sides by 47

$y=1575$

This means...

$7x=2(1575)\\7x=3150$

Divide both sides by 7

$x=450$

One chair costs 450. Now, multiply this number by 12 to find the cost of 12 chairs.

$450*12=5400$

12 chairs cost 5400.

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago