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saveliy_v [14]
3 years ago
6

I have been doing math all day, please help!

Mathematics
2 answers:
Murljashka [212]3 years ago
5 0
Y=-3x+4 is the correct answer
Darya [45]3 years ago
3 0

Answer:

y = -3x + 4

Step-by-step explanation: Substitute the numbers in for x & y to see which one is the answer.

(-1, 7):

y = -3x + 4

7 = -3(-1) + 4

7 = 3 + 4

7 = 7

TRUE


y = 2x - 9

7 = 2(-1) - 9

7 = -2 - 9

7 = -11

FALSE


y = 5x - 2

7 = 5(-1) - 2

7 = -5 - 2

7 = -10

FALSE


y = -3x + 7

7 = -3(-1) + 7

7 = 3 + 7

7 = 10

FALSE


Hope this helps you!!! :)


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Jules reads that 1 pint is equivalent to 0.473 liters. He asks his teacher how many liters there are in a pint. His teacher resp
andrey2020 [161]

One pint is equivalent to 0.473 liters which is approximately 0.47 liters if rounding off nearest to hundredth decimal places and 0.5 liters if rounding off nearest to tenth places.

Further explanation:

Jules reads that one pint is equivalent to 0.473 liters.

1\,\,{\text{Pint}}=0.473\,\,{\text{liters}}

But according to his teacher, one pint is about 0.47 liters.

1\,\,{\text{Pint}}\approx0.47\,\,{\text{liters}}

His teacher round off a value of one pint in liters nearest to hundredth places.

Also according to his parents, one pint is about 0.5 liters.

1\,\,{\text{Pint}}\approx0.5\,\,{\text{liters}}

His parents round off the value of one pint in liters nearest to tenth place.

Therefore, his parents and teachers are both right approximately.

Thus, one pint is equivalent to 0.473 liters which is approximately 0.47 liters if rounding off nearest to hundredth decimal places and 0.5 liters if rounding off nearest to tenth places.

Learn more:

1. Write an algebraic expression for the following word phrase the quotient of r and 12 brainly.com/question/1600376

2. 9 ten thousands ÷ 10 in unit form brainly.com/question/4786449

3. What is the value of the digit 4 in the number 84 230 brainly.com/question/106975

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Decimal system

Keywords: Hundredth, pint, decimal places, liters, teacher, approximately, divisor, kg, share, rounding off

3 0
3 years ago
Three times the sum of 14 and number (x).​
nadezda [96]

Answer:

3 * 14+x

Step-by-step explanation:

* is an multiplication sign

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Someone help i need an answer
soldi70 [24.7K]

Remember that the formula for the perimeter of a rectangle is:

2w + 2l

  • w is the width of the rectangle
  • l is the length of the rectangle

Thus, in this case, you can see that we are adding two of the same monomials and two of another monomial. One monomial is x + 15 and another monomial is x + 5. In this case, these monomials would fulfill the perimeter equation of a rectangle.


Applying this perimeter structure, we can find that this expression represents a perimeter equation of a rectangle with sides x + 15 and x + 5.

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