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Karo-lina-s [1.5K]
3 years ago
11

the sum of four times the first number and three times the second number is 15. the difference of three times the first number a

nd twice the second number is 7 . find the numbers​
Mathematics
1 answer:
Nana76 [90]3 years ago
3 0

Hey there!

Let's create a systems of equations using x and y.

4x+3y=15

3x-2y=7

We need to solve this using elimination. First, we need to multiply the first equation by 2/3 so that we can cancel out the y's when combining our equations.

2 2/3x+2y=10

3x-2y=7

Now we combine the equations...

5 2/3x=17

x=3

Now we can plug our x into the first equation to find y.

12+3y=15

y=1

Our numbers are 3 and 1.

I hope this helps!

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Step-by-step explanation:

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gulaghasi [49]

Answer:

The coordinates of B are (-2 , 9)

Step-by-step explanation:

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To calculate a midpoint you have to add the corresponding coordinates of each point and divide them by 2

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4 0
3 years ago
your gym membership cost $33 per month after an initial membership fee. you paid a total of $228 after 6 months. writer an equat
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Answer:

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Step-by-step explanation:

cost = $33 per month + fee  

1.  c(m) = 33m + f

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 2.  at 9 months:  33(9) + 30 = $327

hopefully this helps :)

have a nice day !!

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The answer is -22. :P

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3 years ago
Read 2 more answers
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