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yarga [219]
3 years ago
11

On Saturday morning, Ahmed decided to take a bike ride from one end of the 15-mile bike trail to the other end of the bike trail

and back. His average speed the first half of the ride was 2 mph faster than his speed on the second half. Find an expression for Ahmed's total travel time. If his average speed for the first half of the ride was 12 mph, how long was Ahmed's bike ride? ​
Mathematics
1 answer:
frosja888 [35]3 years ago
3 0

The expression which relates the total time taken and the time taken for the trip is [15s + 15(s+2)] / s² + 2s and 2.32 hours respectively.

<em>Travel time = distance ÷ speed </em>

<u>Second half of the trip</u> :

  • <em>Speed = s mph</em>

  • <em>Distance covered = 15 miles</em>

<u>Time taken for second half of trip</u> :

Time taken = 15 / s

<u>First half of the trip</u> :

  • <em>Speed = s + 2 mph </em>

<u>Time taken for first half of trip :</u>

Time taken = 15 / (s+2)

<u>Total time taken :</u>

<em>First half + second half</em>

15/(s+2) + 15/s = [15s + 15(s+2)] / s² + 2s

B)

If s = 12

<em>Substitute s = 12 into the expression</em> :

[15(12) + 15(12+2)] / 12² + 2(12)

[180 + 210] / 144 + 24

390 / 168

= 2.32 hours

Therefore, the total time taken is 2.32 hours.

Learn more : brainly.com/question/18796573

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Answer:

Step-by-step explanation:

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5 0
3 years ago
Roberto and Jeanne played a difficult computer game. Roberto's finalas -60 points, and Jeanne's final score was -160 points. Use
Aleksandr-060686 [28]

Answer: -60 > -160

Roberto has the higher final score.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

-60 is greater than -160, because -60 is father to the right than -160 on the number line (see attachment)

Since the direction of < and > always points towards the smallest number.

-60 > -160

Roberto has the higher final score.

Feel free to ask for more if needed or if you did not understand something.

6 0
4 years ago
A set of composite numbers less than 12 .express it in listing and set builder methods​
marusya05 [52]

Given:

A set of composite numbers less than 12.

To find:

The set by listing and set builder methods​.

Solution:

Composite number: A positive integer is called a composite number if it has at least one divisor other than 1 and itself.

Composite numbers less than 12 are 4, 6, 8, 9, 10.

By using the listing method , the given set can be expression as:

Set = {4, 6, 8, 9, 10}

The numbers 4, 6, 8, 9, 10 are greater than 1, less than 12 and non prime numbers.

By using set builder method, the given set can be expression as:

Set = \{x|x\neq P,1

Therefore, the list and set builder notation of the given set are {4, 6, 8, 9, 10} and \{x|x\neq P,1 respectively.

5 0
3 years ago
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BabaBlast [244]

i know that the three movies are 11.97 but i just cant seem to find the others sorry

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4 years ago
Jack had 3 bags of golf balls with b balls in each bag; then his friend gave him 6 more golf balls. How many golf balls does Jac
earnstyle [38]
Answer= (3 x b)+6

Because you multiply to find the total of the golf balls. Then you'll have to add 6.

Hopefully this helped!
3 0
3 years ago
Read 2 more answers
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