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3 years ago

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During a film festival, the first film ticket is priced at $16, and each additional ticket is $11. if Rico spends $71, then how

many film tickets did he purchase

2 answers:

ArbitrLikvidat [17]3 years ago

7 0

Rico purchased a total of 6 tickets.

Sunny_sXe [5.5K]3 years ago

5 0

Rico purchased 6 tickets all together

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Consider the system of equations.

Harman [31]

The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:

x = -3, y = 2

The given system of equations:

x + 2y = 1............(1)

-3x - 2y = 5..........(2)

This can be written in matrix form as shown:

$\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}1\\5\end{array}\right]$

Find the determinant of $\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right]$

$\triangle = 1(-2) - 2(-3)\\\triangle = -2+6\\\triangle = 4$

$\triangle_x = \left[\begin{array}{ccc}1&2\\5&-2\end{array}\right]\\\triangle_x = 1(-2)-2(5)\\\triangle_x = -2-10\\\triangle_x =-12$

$\triangle_y = \left[\begin{array}{ccc}1&1\\-3&5\end{array}\right]\\\triangle_y = 1(5)-1(-3)\\\triangle_y = 5 + 3\\\triangle_y =8$

$x = \frac{\triangle_x}{\triangle} \\x = \frac{-12}{4} \\x = -3$

$y = \frac{\triangle_y}{\triangle} \\y = \frac{8}{4} \\y = 2$

The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:

x = -3, y = 2

Learn more here: brainly.com/question/4428059

3 0

2 years ago

How do you show your work for 4.71- 3.82=

Anastaziya [24]

Answer is 0.89 sorry for bad drawing and putting 89 as the answer instead of 0.89

3 0

3 years ago

If y varies inversely as x, and y = 10 when x = 20,<br> find x when y = 16.

Ipatiy [6.2K]

Answer:

12.5

Step-by-step explanation:

y varies inversely as x.

y = k/x

10 = k/20

200 = k

The constant proportion k is 200.

16 = 200/x

Cross multiply.

200 = 16x

200/16 = x

x = 12.5

5 0

3 years ago

How do i solve this??????

Elenna [48]

You have to try. You can do this.

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claudia was cooking breakfast for her entire family. she made double the amount of chocolate chips pancakes as she did regular p

iren2701 [21]

Answer:

Step-by-step explanation:

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3 years ago