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bazaltina [42]
2 years ago
3

Finn bought 12 movie tickets. Student tickets cost $4, and adult tickets cost $8. Finn spent a total of $60. Write and graph a s

ystem of equations to find the number of student and adult tickets Finn bought.

Mathematics
1 answer:
kifflom [539]2 years ago
5 0
S will stand for the number of studen tickets while A will be for adult tickets.
The first equation will be for how many tickets there are 
S+A=12
The second will be the cost.
4S+8A=60
We will multiply the first equation by -4 to eliminate S.
-4S-4A=-48
4S+8A=60
4A=12
12÷4=3
So he bought 3 adult tickets, meaning the remaining tickets had to be students.
So, he bought 3 adult tickets and 9 student tickets.
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6 0
2 years ago
A grocery store gives away a $10 gift card to every 25th customer and a $20 gift card to every 60th customer. Which customer wil
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The 300th customer would be the first to recieve both. They would have given away 5 of the 20$ gift cards and 12 of the 10$ ones for a total of 17 gift cards.
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2 years ago
Two linear functions are shown below which function has the greater rate of change
Shtirlitz [24]

Answer:

On this case if we analyze both slopes, we see that function 2 has a greater rate of change because have a slope greater on absolute value than the slope for Function 1 (|-5|>|4|). No matter if the sign is positive or no we are analyzing the rate of change and for this case we need to use the absolute value to find the solution.

Step-by-step explanation:

Assuming the following two functions:

Function 1: y = 4x + 8

Function 2:  

x y

2 20

4 10

6 0

We can find the slope for the second function like this:

m =\frac{10-20}{4-2}=-5

And in order to find the intercept we can use any point for example (2,20) and we got:

20 =-5(2) +b

And then b=30

So our function 2 is given by: y =-5x +30

On this case if we analyze both slopes, we see that function 2 has a greater rate of change because have a slope greater on absolute value than the slope for Function 1 (|-5|>|4|). No matter if the sign is positive or no we are analyzing the rate of change and for this case we need to use the absolute value to find the solution.

7 0
2 years ago
A statistics teacher was interested in the relationship between the number of days students waited to start a project and the sc
Fiesta28 [93]

Answer:

<em>A: For each increase in the number of procrastination days by 1, the predicted grade decreases by 3.64 points.</em>

Step-by-step explanation:

<u>The slope of a Regression Line</u>

A straight line can be represented in the slope-intercept form:

y = mx + b

Where m is the slope and b is the y-intercept.

The slope describes how fast and in what direction the graph goes when x changes values.

If m is positive, increments in x imply increments in y.

If m is negative, increments in x imply decrements in y.

The regression line is:

ŷ = –3.64x + 96.5

Where:

x = the number of procrastination days

ŷ = the predicted grade

We can say the slope is m=-3.64. This means that:

A: For each increase in the number of procrastination days by 1, the predicted grade decreases by 3.64 points.

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2 years ago
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2 years ago
Read 2 more answers
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