In order to solve this problem we will assign a variable to Curtis speed on the first leg of the trip, this will be called "s". Since the speed on the first part is "s" and the speed on the second part is 20% higher, then the speed on the second part is "1.2s". Each leg of the course is 9 miles long, therefore the time it took to go each way is given by:

time = distance/speed

First part:

t1 = 9/s

Second part:

t2 = 9/1.2s = 7.5/s

The expression for the whole course is the sum of each, so we have:

t = t1 + t2

t = 9/s + 7.5/s

t = (9 + 7.5)/s = (16.5)/s

7 0

3 years ago

Explain why a three-dimensional figure with a curved surface is not a polyhedron

max2010maxim [7]

Hope this can help explain better got you. :)

5 0

3 years ago

Module 03: Project Option 1

prisoha [69]

For #1, I have attached the number line.

For #2, I have provided two examples. One shows a different any quality symbol, and the other one shows the same based on absolute values.

For #3, you can see using the number line that -0.5 is the closest to zero.

8 0

3 years ago