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Fantom [35]
3 years ago
12

Jen Butler has beepricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 108. T

wo adults and three children must pay $ 77. Find the price of the​ adult's ticket and the price of a​ child's ticket
Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

3x + 4y = 108

2x + 3y = 77

----

answer:

x= adult = $16

y= child = $15


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What are the expressions?
Romashka [77]
<h2>Explanation:</h2>

Here we need to solve some expressions. Remember the following rules:

(+)(+)=+ \\ \\ (-)(-)=+ \\ \\ (+)(-)=- \\ \\ (-)(+)=-

Then, from the left side:

5-2\cdot 7=5-14=\boxed{-9} \\ \\ 5-2\cdot 4=5-8=\boxed{-3} \\ \\ 5-2\cdot 0=5-0=\boxed{5} \\ \\ 5-2\cdot -3=5+6=\boxed{11} \\ \\ 5-2\cdot 10=5-20=\boxed{-15} \\ \\ 5-2\cdot -8=5+16=\boxed{21} \\ \\

from the right side:

-(-4)+3=4+3=\boxed{7} \\ \\ -(6)+3=-6+3=\boxed{-3} \\ \\ -(-8)+3=8+3=\boxed{11} \\ \\ -(-5)+3=5+3=\boxed{8} \\ \\ -(2)+3=-2+3=\boxed{1} \\ \\ -(15)+3=-15+3=\boxed{-12} \\ \\ -(-6)+3=6+3=\boxed{9}

4 0
3 years ago
F'(-7, 13) was dilated by a scale factor of 2 about (-2, -5), the resulting image is___
AveGali [126]

The resulting image of the point F(x, y) = (- 7, 13) is F'(x, y) = (- 12, 31).

<h3>What is the resulting image of a point by rigid transformation?</h3>

In this problem we have a point that has to be transformed by a kind of rigid transform known as dilation, which is defined by the following equation:

P'(x, y) = O(x, y) + k · [P(x, y) - O(x, y)]             (1)

Where:

  • O(x, y) - Center of dilation
  • P(x, y) - Original point
  • P'(x, y) - Image
  • k - Scale factor

If we know that O(x, y) = (- 2, - 5), F(x, y) = (- 7, 13) and k = 2, then the resulting image is:

F'(x, y) = (- 2, - 5) + 2 · [(- 7, 13) - (- 2, - 5)]

F'(x, y) = (- 2, - 5) + 2 · (- 5, 18)

F'(x, y) = (- 2, - 5) + (- 10, 36)

F'(x, y) = (- 12, 31)

The resulting image of the point F(x, y) = (- 7, 13) is F'(x, y) = (- 12, 31).

To learn more on rigid transformations: brainly.com/question/28004150

#SPJ1

3 0
2 years ago
Suppose you invest $2000 at an annual interest rate of 4.5%. how long will it take for it to earn $495?
Neko [114]
100%:2000$=4.5%:x$, x=90$. After 1st year I earned 90$, now I have 2090$.
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So I need 6 years to earn 495$.
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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