Lori rented a car for one day. The daily rental rate was $12.50 plus 25 cents per mile. The total cost of her rental was $46. Ho
1 answer:
Answer:
The number of miles Lori drive be 134 miles .
Step-by-step explanation:
Let us assume that the number of miles Lori be x.
As given
Lori rented a car for one day.
The daily rental rate was $12.50 plus 25 cents per mile.
As 1 dollar = 100 cent
As given
The total cost of her rental was $46.
Than the equation becomes
46 = 12.50 + 0.25x
46 - 12.50 = 0.25x
33.5 = 0.25x
x = 134 miles
Therefore the number of miles Lori drive be 134 miles .
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Complete Question
A measurement template with a historical value of 25.500 mm is measured 27 times and a mean value of 25.301 mm is recorded. What is the percent bias when the tolerance is +/- 0.3?
Answer:
The percent bias is
Step-by-step explanation:
From the question we are told that
The historical value is
The number of times it is measured is n = 7
The mean value is
The tolerance is
Generally the percent bias is mathematically represented as
=>
=>
Answer:
The system of equations has a one unique solution
Step-by-step explanation:
To quickly determine the number of solutions of a linear system of equations, we need to express each of the equations in slope-intercept form, so we can compare their slopes, and decide:
1) if they intersect at a unique point (when the slopes are different) thus giving a one solution, or
2) if the slopes have the exact same value giving parallel lines (with no intersections, and the y-intercept is different so there is no solution), or
3) if there is an infinite number of solutions (both lines are exactly the same, that is same slope and same y-intercept)
So we write them in slope -intercept form:
First equation:
second equation:
So we see that their slopes are different (for the first one slope = -6, and for the second one slope= -3/2) and then the lines must intercept in a one unique point. Therefore the system of equations has a one unique solution.