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oksano4ka [1.4K]
3 years ago
14

dollars of a Class party is 59 + 13 in where in is the number of people attending what is the cost for 44 people

Mathematics
1 answer:
Alina [70]3 years ago
7 0
Plug in 44
so
59+13(44) = 631
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Lisa is currently taking physics as one of her electives in school. her grade at the end of the year is determined by the averag
ICE Princess25 [194]

The score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.

<h3>What is the average of a group of numbers?</h3>

The average of the group of numbers is the ratio of the sum of all the numbers of the group to the total number of the group.

Lisa is currently taking physics as one of her electives in school.

Her grade at the end of the year is determined by the average of four exams, each worth 100 points.

  • On her first test, she got an 84,
  • On her second, she got a 92,
  • On her third, an 80.

She got exactly 80% in the course. Let she scores x marks in her fourth exam. Thus,

\dfrac{84+92+80+x}{4}=80\\256+x=80\times4\\x=320-256\\x=64

Hence, the score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.

Learn more about the average here;

brainly.com/question/20118982

4 0
2 years ago
In the equation 3/4y+1/2=3 1/4, the fractional coefficient is what
AURORKA [14]

Answer:

\frac{3}{4}

Step-by-step explanation:

Given equation: \frac{3}{4}y + \frac{1}{2} = 3 \frac{1}{4}

In the given equation, \frac{3}{4} is a coefficient and y is the variable.

coefficient is a constant number or quantity multiplied to a variable in an algebric expression. Like in the above equation \frac{3}{4} is a coefficient and y is the variable. We use term variable for y as its value may vary or change. If variable does not have any coefficient in any expression then in that case, we consider 1 as coefficient, for example: x+4, here variable have 1 as coefficient.

Hence, the fractional coefficient is \frac{3}{4}.

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3 years ago
Describe a real-life situation that could be modeled by dividing two rational numbers.
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Amount of dresses you could make with material and how many marbles can fit into a container.
4 0
3 years ago
Write two different expressions that<br> represent the quantity x decreased<br> by 30%.
s344n2d4d5 [400]

Answer:

Step-by-step explanation:

x - 30 = 14 - 3x

    4x = 44

      x = 11

Let's call the unknown number x

Now let's decrease it by 30, that is x-30

Now let's write out "14 decreased by three times the number", that is 14 - 3x

The problem says these are the same, that is x - 30 = 14 - 3x

We now want to isolate, or solve for, x

Move the x to one side of the equation by adding 3x to both sides

3x + x -30 = 14 - 3x + 3x

4x -30 = 14

Now move the 30 to the right hand side by adding 30 to both sides

4x - 30 + 30 = 14 + 30

4x = 44

Now all we have to do to get x is divide both sides by 4

4x/4 = 44/4

x = 11

4 0
2 years ago
the path of a kicked soccer ball can be modeled by the equation y=3x^2. State whether the equation represents a linear or a nonl
Flura [38]

Answer:

  nonlinear

Step-by-step explanation:

The degree of x in the equation is not 0 or 1, so the function is nonlinear.

_____

<em>Additional comment</em>

Your function graphs as a parabola, not a straight line. A function is only linear if its graph is a straight (non-vertical) line.

5 0
2 years ago
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