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docker41 [41]
3 years ago
8

Can a triangle with the following sides exist? 7, 8, 1

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0

Answer:

No

Step-by-step explanation:

Can a triangle with the following sides exist? 7, 8, 1

Answer is NO

Because the sum of any two sides has to be greater than the third side but here we have:

  • 8 = 7+1

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ozzi
I think so it’s 1.30
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2 years ago
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Alexa pays 7/20 of a dollar for each minute she uses her pay-as-you-go phone for a call, and 2/5 of a dollar for each minute of
9966 [12]

Answer:

  • The system of equations is x + y = 85 and 7/20x+2/5y=31
  • To eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7.
  • B-She used 60 minutes for calling and 25 minutes for data.

Step-by-step explanation:

It is always a good idea to start by defining variables in such a problem. Here, we can let x represent the number of calling minutes, and y represent the number of data minutes. The the total number of minutes used is ...

  x + y = 85

The total of charges is the sum of the products of charge per minute and minutes used:

  7/20x + 2/5y = 31.00

We can eliminate the x-variable in these equations by multiplying the first by -7 and the second by 20, then adding the result.

  -7(x +y) +20(7/20x +2/5y) = -7(85) +20(31)

  -7x -7y +7x +8y = -595 +620 . . . . eliminate parentheses

  y = 25 . . . . . . . . simplify

Then the value of x is

  x = 85 -y = 85 -25

  x = 60

7 0
3 years ago
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PLEASE HELP ASAP!! I'LL GIVE YOU BRAINLIEST!!
Ludmilka [50]

Answer:

-5

Step-by-step explanation:

This is the correct answer, I messed up at first so I edited it. (my bad)

7 0
3 years ago
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State whether each pair of terms are like terms. (so yes or no)
Rom4ik [11]

Answer: 4xy and 3xy are, 2s and 5s are, but -10 and -10b aren't.

Step-by-step explanation: 4xy and 2xy have the same terms. 2s and 5s have the same terms but -10a and -10b have different variables.

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This would be 525 / 0.70  = $750 Answer
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3 years ago
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