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natima [27]
9 months ago
8

A car starts on a trip and travels at an average speed of 50 miles per hour. Two hours later, a second car starts on the same tr

ip and travels at an average speed of 70 miles per hour.
(a) Find the distance each vehicle has traveled when the second car has been on the road for t hours.
first car
second car


(b) Use the result of part (a) to write the distance between the first car and the second car as a function of t.
d =


(c) Write the ratio of the distance the second car has traveled to the distance the first car has traveled as a function of t.
Mathematics
1 answer:
umka21 [38]9 months ago
7 0

The distance traveled by first car is 50t + 100.

The distance traveled by second car is 70t.

The distance between the two cars after time, t is d = 100 - 20t.

The ratio of the distance traveled by the cars is (70t) / (50t + 100).

<h3>Distance traveled by each vehicle is calculated as follows;</h3>

The distance traveled by each vehicle at the given time is calculated as follows;

<h3>Distance traveled by first car</h3>

D₁ = speed x time

D₁ = 50(t + 2)

D₁ = 50t + 100

<h3>Distance traveled by the second car</h3>

D₂ = 70t

<h3>Distance between the two cars after time, t</h3>

d = D₁ - D₂

d = (50t + 100) - 70t

d = 100 - 20t

<h3>Ratio of the distance traveled by the cars</h3>

D₂/D₁ = (70t) / (50t + 100)

Learn more about distance traveled by a vehicle here: brainly.com/question/6504879

#SPJ1

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A group of friends wants to go to the amusement park. They have no more than $65 to spend on parking and admission. Parking is $
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Considering the definition of an inequality, the number of people who can go to the amusement park is 3.

<h3>Definition of inequality</h3>

An inequality is the existing inequality between two algebraic expressions, connected through the signs:

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An inequality contains one or more unknown values ​​called unknowns, in addition to certain known data.

Solving an inequality consists of finding all the values ​​of the unknown for which the inequality relation holds.

<h3>Number of people who can go to the amusement park</h3>

In this case, you know that:

  • A group of friends has no more than $65 to spend on parking and admission.
  • Parking is $9.75, and tickets cost $16.25 per person, including tax.

Being "p" the number of people who can go to the amusement park, the inequality that expresses the previous relationship is

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Finally, the number of people who can go to the amusement park is 3.

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Answer:

Step-by-step explanation:

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\sqrt{7^2 - 4^2} = \sqrt{49 - 16} = \sqrt{33}

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