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ira [324]
4 years ago
5

Three friends bought 4, 6, and 8 books. The table shows the cost of the books. What is the constant of proportionality? 2 7.5 15

30
Mathematics
2 answers:
Svetach [21]4 years ago
6 0
Your anwser would be 8
Alexxandr [17]4 years ago
3 0
The answer is 15 because if you look at the number if books, it goes by 2. If you look at the prices, it goes by 15. What it is mainly asking for is what the number goes by. Therefore the correct answer is 15.

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Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution.
Len [333]

Answer:

only one solution

Step-by-step explanation:

Complete question:

<em>Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 2x − y = 2 3x + y = −6 one and only one solution infinitely many solutions no solution Find the solution, if one exists. (If there are infinitely many solutions, express x and y in terms of the parameter t. If there is no solution, enter NO SOLUTION.) (x, y) </em>=

Given the expression

2x − y = 2 .... 1

3x + y = −6  ..... 2

We are to determine the number of solution the equation has:

Add equation 1 and 2

2x + 3x = 2 - 6

5x = -4

x = -4/5

Substitute x = -4/5 into 1

From 1: 2x − y = 2 .... 1

2(-4/5) - y = 2

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-y = -2+8/5

-y = -10+8/5

-y = -2/5

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<em>Since the value of x and y are just 1 hence the system of equations has ine solution</em>

3 0
3 years ago
Quick Help please? :D
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