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zepelin [54]
2 years ago
9

What is the constant of proportionality from this table?

Mathematics
1 answer:
zloy xaker [14]2 years ago
3 0

Answer:

k = 5

Step-by-step explanation:

k = constant

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Hailey sold 20 tickets to the school play for a total of 225$.Early bird tickets were 10$ and regular priced tickets were 15$.Wr
dlinn [17]

Answer:

The system of equation are \left \{ x+y=20} \atop {10x+15y=225}} \right.

The number of early bird tickets are <u>15</u> and of regular tickets are <u>5</u>.

Step-by-step explanation:

Given,

Total number of tickets = 20

Total amount = $225

Solution,

Let the number of early bird tickets be 'x'.

And also let the number of regular tickets be 'y'.

Now total number of tickets is the sum of number of early bird tickets and number of regular tickets.

So framing in equation form, we get;

Total number of tickets = number of early bird tickets + number of regular tickets

x+y=20\ \ \ \ equation\ 1

Again, Total amount is the sum of number of early bird tickets multiplied with price of each ticket and number of regular tickets multiplied with price of each ticket.

So framing in equation form, we get;

10x+15y=225\ \ \ \ \ equation\ 2

Hence the system of equation are \left \{ x+y=20} \atop {10x+15y=225}} \right.

Now we solve the equation by multiplying equation 1 by 10, and get;

10(x+y)=20\times10\\\\10x+10y=200\ \ \ \ equation\ 3

Now subtracting equation 3 from equation 2, we get;

(10x+15y)-(10x+10y)=225-200\\\\10x+15y-10x-10y=25\\\\5y=25\\\\y=\frac{25}{5}=5

On substituting the value of 'y' in equation 1, we get;

x+y=20\\\\x+5=20\\\\x=20-5=15

Hence The number of early bird tickets are <u>15</u> and of regular tickets are <u>5</u>.

3 0
3 years ago
A large diamond with a mass of 2138.7 grams was recently discovered in a mine. If the density of the diamond is 3.51 grams over
Sliva [168]

The volume of large diamond is 609.12 centimeters cubed.

Step-by-step explanation:

Given,

Mass of diamond = 2138 grams

Density of the diamond = 3.51 grams/cm³

We know that;

Density = \frac{Mass}{Volume}\\

Volume = \frac{Mass}{Density}

Volume of diamond = \frac{2138}{3.51}

Volume of diamond = 609.12 cm³

The volume of large diamond is 609.12 centimeters cubed.

Keywords: mass, volume

Learn more about volume at:

  • brainly.com/question/11150876
  • brainly.com/question/11175936

#LearnwithBrainly

5 0
3 years ago
Read 2 more answers
Use the rules for multiplication by powers of 10 to calculate 3 times 100
Georgia [21]
3 * 100 = 300 because it is only asking you to claculate 3*100
3 0
3 years ago
Factorise 4a²_4ab+b²<br>​
Natalija [7]

Answer:

(2a -b)^2

Step-by-step explanation:

7 0
3 years ago
Determine where each piece below belongs to create a rational expression equivalent to the one shown above.
Luba_88 [7]

An example of a rational expression is 2x+3/x-2.

<h3>What is a rational expression?</h3>

The complete question wasn't found. Therefore, a overview will be given. It should be noted that a rational expression simply means quotient of two polynomials.

A rational expression is a fraction whose numerator and denominator are polynomials.

In this case, an example of a rational expression is 2x+3/x-2

Learn more about rational expression on:

brainly.com/question/2264785

#SPJ1

3 0
2 years ago
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