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marta [7]
2 years ago
15

5 markers cost \$6.55$6.55dollar sign, 6, point, 55. Which equation would help determine the cost of 444 markers? Choose 1 answe

r: Choose 1 answer: (Choice A) A \dfrac{4}{5} = \dfrac{\$6.55}{x} 5 4 ​ = x $6.55 ​ start fraction, 4, divided by, 5, end fraction, equals, start fraction, dollar sign, 6, point, 55, divided by, x, end fraction (Choice B) B \dfrac{4}{\$6.55} = \dfrac{x}{5} $6.55 4 ​ = 5 x ​ start fraction, 4, divided by, dollar sign, 6, point, 55, end fraction, equals, start fraction, x, divided by, 5, end fraction (Choice C) C \dfrac{5}{4} = \dfrac{x}{\$6.55} 4 5 ​ = $6.55 x ​ start fraction, 5, divided by, 4, end fraction, equals, start fraction, x, divided by, dollar sign, 6, point, 55, end fraction (Choice D) D \dfrac{4}{x} = \dfrac{\$6.55}{5} x 4 ​ = 5 $6.55 ​ start fraction, 4, divided by, x, end fraction, equals, start fraction, dollar sign, 6, point, 55, divided by, 5, end fraction (Choice E) E None of the above Stuck?Watch a video or use a hint.
Mathematics
1 answer:
Ivenika [448]2 years ago
3 0

Answer:

  E  None of the above

Step-by-step explanation:

An appropriate proportion is ...

  \dfrac{4}{5}=\dfrac{x}{\$6.55}

or any of the alternate ways this proportion can be written. None of the offered choices matches this, so it is appropriate to choose ...

  None of the above.

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An audience of 450 people is seated in an auditorium. Each row contains the same number of seats and each seat in the auditorium
Kruka [31]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

SR = 450 
<span>S = 450/R </span>

<span>(S - 3)(R + 5) = 450 </span>
<span>(450/R - 3)(R + 5) = 450 </span>
<span>(450 - 3R)(R + 5) = 450R </span>
<span>450R + 2250 - 3R^2 - 15R = 450R </span>
<span>3R^2 + 15R - 2250 = 0 </span>
<span>R^2 + 5R - 750 = 0 </span>
<span>R^2 + 30R - 25R - 750 = 0 </span>
<span>R(R + 30) - 25(R + 30) = 0 </span>
<span>(R + 30)(R - 25) = 0 </span>
<span>R ∈ {-30,25} 
</span>
<span>Only positive numbers make sense in this context, therefore R = 25.</span>

5 0
1 year ago
Read 2 more answers
An elevator in a tall building goes up 7 floors, then
3241004551 [841]

Answer: he started on 14th floor

Step-by-step explanation:

14 + 7 - 9 - 4 + 8 - 2= 14

It started on floor 14

5 0
2 years ago
I rent a gym for $150.00 for 30 students. Another time I rent the gym for $270.00 for 70 students. I need to find a fixed rate.
masha68 [24]

Answer: y = 3x + 60

<u>Step-by-step explanation:</u>

Set up two equations and solve the system:

 270 = 70x + b

- <u>(150 = 30x + b)</u>

  120 = 40x

    3   =  x

Input "x" into one of the equations and solve for "b":

150 = 30x + b

150 = 30(3) + b

150 = 90 + b

60 = b


Equation: y = 3x + 60

This means that there is a flat fee of $60 plus a rate of $3 per student


5 0
2 years ago
W = 3x + 7y solve for y
mario62 [17]

Answer:

The value of the equation y=\frac{W-3x}{7}.

Step-by-step explanation:

Consider the provided equation.

W = 3x + 7y

We need to solve the provided equation for y.

Subtract 3x from both side.

W-3x= 3x-3x+ 7y

W-3x=7y

Divide both sides by 7.

\frac{7y}{7}=\frac{W-3x}{7}

y=\frac{W-3x}{7}

Hence, the value of the equation is y=\frac{W-3x}{7}.

8 0
2 years ago
Mukat has five times as many book as usha.If mukat gave 16 books to usha,they each would have the same number.how many books did
vladimir1956 [14]

Mukat gets 40, Usha gets 8

Step-by-step explanation:

Mukat = 5 × Usha

After Mukat gives Usha 16 books ,Usha gets (16 + initial number of books) and Mukat gets (5 × Usha - 16)

Then Mukat = final number of books for Usha

5 × Usha - 16 = Usha + 16

(5 × Usha ) - Usha = 16+16

4 × Usha = 32

Usha = 8 i.e her number of books.

Mukat = 5×8=40.

I HOPE IT'S OK

6 0
2 years ago
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