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drek231 [11]
3 years ago
5

Which reflection of the point will produce an image at the same time coordinates (0,k)

Mathematics
1 answer:
Anettt [7]3 years ago
4 0
I need more details.
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Ritchie got a job at the movie theater. On the first day, he sold 5 adult tickets and 7 children tickets for a total of 104. On
g100num [7]

Answer:

  • adult: $11
  • children: $7

Step-by-step explanation:

The sales on the two days can be expressed using equations that can be solved for ticket prices.

<h3>Setup</h3>

Let x and y represent the prices of adult and children's tickets, respectively. Then the sales revenue for the two days can be expressed in the equations ...

  • 5x +7y = 104
  • 7x +3y = 98

<h3>Solution</h3>

One of the easiest solution methods is to use a graphing calculator. The first attachment shows the prices are $11 for an adult ticket; $7 for children tickets.

Using the matrix functions of a calculator, the augmented matrix of the equation coefficients can be reduced to row-echelon form. This, too, shows the solution to be (adult price, children price) = ($11, $7). See the second attachment. (The solution is the right-most column of the reduced matrix.)

Yet another solution method can use the coefficients from the equations written in general form:

  • 5x +7y -104 = 0
  • 7x +3y -98 = 0

In this form, we define three products of "cross multiplication":

  Δ1 = (5)(3) -(7)(7) = -34

  Δ2 = (7)(-98) -(3)(-104) = -374

  Δ3 = (-104)(7) -(-98)(5) = -238

Using those, we find the variable values to be ...

  x = Δ2/Δ1 = -374/-34 = 11

  y = Δ3/Δ1 = -238/-34 = 7

(adult price, children price) = ($11, $7)

__

You can read more about the cross-multiplication method here:

brainly.com/question/26397343

6 0
1 year ago
Read 2 more answers
Jordan invested $97,000 in an account paying an interest rate of 1.6% compounded
Marat540 [252]
Ill give u the answer hold up i gotta do the work
5 0
3 years ago
Help pppppppppppppppPPPPPPPP
Ainat [17]

Answer:

39

Step-by-step explanation:

if you square 15 and 36 you get

225+1296=1521

1521 square rooted is 39

3 0
3 years ago
Read 2 more answers
A painter is making a shade of purple paint by mixing 2 cups of red paint for every 12 cups of blue paint. Unfortunately, the pa
ElenaW [278]

ANSWER

He can add about 192 more cups of paint

8 0
3 years ago
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The satellite photos seemed to indicate
Dafna1 [17]

Answer:the warehouse's width is 100 feet.

Step-by-step explanation:

Let L represent the length of the rectangular warehouse.

Let W represent the width of the rectangular warehouse.

The rectangular warehouse was 20 feet longer than 3 times its width. This means that

L = 3W + 20

The perimeter of a rectangle is

the sum of all its sides. Therefore, the formula for determining the perimeter of a rectangle expressed as

Perimeter = (L + W)

If the perimeter of the warehouse was 840 feet, it means that

2(L + W) = 840

Dividing through by 2, it becomes

L + W = 420- - - - - - - - 1

Substituting L = 3W + 20 into equation 1, it becomes

3W + 20 + W = 420

4W = 420 - 20

4W = 400

W = 400/4 = 100

8 0
3 years ago
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