5(n-10)=40 is the equation
5n-50=40 solve for n
5n = 90
n =18
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Answer:
<em>* Substation :</em>
Subtract y from both sides of the equation.
x=6−y
x−y=4
Replace all occurrences of x with 6−y in each equation.
6−2y=4
x=6−y
Solve for y in the first equation.
y=1
x=6−y
Replace all occurrences of y with 1 in each equation.
x=5
y=1
The solution to the system is the complete set of ordered pairs that are valid solutions. (5,1)
The result can be shown in multiple forms. Point Form: (5,1)
Equation Form: x=5,y=1
<em>* Elimination :</em>
Multiply each equation by the value that makes the coefficients of x opposite.
x+y=6
(−1)⋅(x−y)=(−1)(4)
Simplify.
x+y=6
−x+y=−4
Add the two equations together to eliminate x from the system.
(x+y=6) + (−x+y=−4) = (2y=2)
Divide each term by 2 and simplify.
y=1
Substitute the value found for y into one of the original equations, then solve for x.
x=5
The solution to the independent system of equations can be represented as a point.
(5,1)
The result can be shown in multiple forms. Point Form:(5,1)
Equation Form: x=5,y=1
Step-by-step explanation:
<em>* Graph</em>
Answer:
Step-by-step explanation:
f(x) = x² - 2x + 5
1) f(2) = (2)² - 2(2) + 5 = 5
2) f(-3) = (-3)² - 2(-3) + 5 = 20
3) f(0) = (0)² - 2(0) + 5 = 5
4) f(5) - f(-2) = (5)² - 2(5) + 5 - [(-2)² - 2(-2) + 5 = 20 - 13 = 7
5) f(1) + f(6) = (1)² - 2(1) + 5 + [(6)² - 2(6) + 5 = 4 + 29 = 33
What are the various amounts for each company, we must know that first in order to solve the rest!