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stodd9503
09.09.2020 •
Mathematics
The amounts of money Peter and Maria each charge to deliver food are
described below.
• Peter charges a flat fee of $3.75 for each delivery plus $0.10 per mile
for each mile he drives.
Maria charges a flat fee of $2:25 for each delivery plus $0.25 per mile
for each mile she drives.
Peter says there are two distances for which he and Maria charge the same
amount. To prove Peter is not correct. Mana graphs a line for her delivery charges
and a line for Peter's delivery charges. Each line represents the relationship
between the amount vi in dollars, each person charges for a delivery and the
distance ox), in miles, each drives for the delivery.
C. Without showing the graph explain how Maria's graph of the two lines proves
Pater is not correct.
Solved
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Ответ:
The solution is
and ![x=-0.5](/tpl/images/0469/3875/bfc2f.png)
Step-by-step explanation:
The expression is![2x(x+1.5)=-1](/tpl/images/0469/3875/84591.png)
Multiplying the term
by
, we get,
Adding both sides by 1,
Taking factor, we get,
Equating the factors to 0,
Thus, the smaller value is![x=-1](/tpl/images/0469/3875/66413.png)
The solution is
and ![x=-0.5](/tpl/images/0469/3875/bfc2f.png)