2 years ago

Solve the equations 7x+9y=27 and 4x+5y=13 by combining the equations

Mathematics

1 answer:

Fantom [35]2 years ago

7 0

Is that what you need

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How mamy ways can you add three differemt numbers to get a sum of 20

LenaWriter [7]

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3 years ago

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Find the missing value of the direct variation (2,5) (5,y)

Karolina [17]

Answer:

The missing value y=12.5 and we have (5,12.5)

Step-by-step explanation:

The formula used for direct variation is:

$y\: \alpha \:x\\y=kx$

We need to find missing value (2,5)(5,y)

First we will find k, and then y

We have x=2, y=5

Find k:

$y=kx\\5=k(2)\\k=\frac{5}{2}\\k=2.5$

Now, we cam find missing value in (5,y)

We have x=5, k=2.5 and y=?

$y=kx\\y=2.5(5)\\y=12.5$

So, the missing value y=12.5 and we have (5,12.5)

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2 years ago

PlS help lots of points

Len [333]

I feel like there is something missing from this question, for example how large is the tree house? If these are just plain measurements, then I would opt for B.

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2 years ago

The price of a shirt was $38. It was reduced by 20% and then again by 10%.what is the final price of the shirt

tiny-mole [99]

First you would take 20% off the orignal price giving you 30.4$ after that you take 10% of 30.4 to get 27.36$.

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2 years ago

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Simplify 3^0. Simplified form: ______

Shkiper50 [21]

Answer:

Step-by-step explanation:

3^0

Apply rule a^0=1 a=0

Thanks for letting me help!!

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3 years ago

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