Theo solved the following problem correctly for homework. 2 x y = 7. Negative 3 x y = 2. What is the y-coordinate of his solutio
2 answers:
To solve the problem we must know about the system of equations.
<h2>System of equation</h2><h3>Inconsistent System</h3>
A system of equations to have no real solution, the lines of the equations must be parallel to each other.
<h3>Consistent System</h3>1. Dependent Consistent System
A system of the equation to be Dependent Consistent System the system must have multiple solutions for which the lines of the equation must be coinciding.
2. Independent Consistent System
A system of the equation to be Independent Consistent System the system must have one unique solution for which the lines of the equation must intersect at a particular.
The coordinate for the solution to this system of equation is (1,5).
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Theo's homework
- 2x+y=7
- -3x+y=2
- 2x+y=7
solving for y,
- -3x+y=2
Substitute the value of y,
Substitute the value of x in the equation of y,
Hence, the coordinate for the solution to this system of equation is (1,5).
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Answer:
The expected value for a student to spend on lunch each day = $5.18
Step-by-step explanation:
Given the data:
Number of students______$ spent
2 students______________$10
1 student________________$8
12 students______________$6
23 students______________$5
8 students_______________$4
4 students_______________$3
Sample size, n = 50.
Let's first find the value on each amount spent with the formula:
Therefore,
For $10:
For $8:
l
For $6:
For $5:
For $4:
For $3:
To find the expected value a student spends on lunch each day, let's add all the values together.
Expected value =
$0.4 + $0.16 + 1.44 +$2.3 + $0.64 + $0.24
= $5.18
Therefore, the expected value for a student to spend on lunch each day is $5.18