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tankabanditka [31]
3 years ago
12

Please help i need both

Mathematics
1 answer:
Contact [7]3 years ago
5 0

Answer:

1. 10 inches 2. $7.70

Step-by-step explanation:

For number one they are simply multiplying the width by 2 and for the length, it would be 5 times 2 and you'll get 10 inches.

For number 2, you had to do 21 divided by 3 and get 7. Then find 10% of 21 which is 2.10. Then 2.10 divided by the three people is 0.7. So add 7 and .7 together and get $7.70

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IRISSAK [1]

Answer:

x = 5, y = -2

Step-by-step explanation:

<u>Given equations:</u>

  • x + 2y = 1
  • 3x - y = 17​

<u>From the first equation we get:</u>

  • x = 1 -2y

<u>Substitute x in the second equation, find y:</u>

  • 3x - y = 17
  • 3*(1-2y) - y = 17
  • 3 - 6y - y = 17
  • -7y = 17 - 3
  • -7y = 14
  • y = -14/7
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<u>Find x:</u>

  • x = 1 - 2y
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6 0
2 years ago
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Likurg_2 [28]

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6 0
2 years ago
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Please help me ......................
jekas [21]

Answer:

n = 18

Step-by-step explanation:

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We are given that the sum is 2880, and are trying to find n.

Simply sub in S = 2880,

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Divide by 180 to get (n - 2) by themselves on the right side,

16 = n - 2

Now add 2 to the other side to get n by itself

18 = n

n = 18

Hope this helped!! Please feel free to ask me if there's anything you don't understand from this working

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alexira [117]

Answer:

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Step-by-step explanation:

Option B is the correct answer

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Step-by-step explanation:

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