Ayshab walked x miles at 4 mph. She then walked 2x miles at 3 mph.
Find Ayshab's average speed for the whole journey.
Give your answer as a mixed number.

Ayshab's average speed for the whole journey is 36/11 mph and this can be determined by using the formula of average speed.

Given :

The formula of speed is given by:

Now, the time taken by Ayshab to walk x miles at 4 mph is :

Now, the time taken by Ayshab to walk 2x miles at 3 mph is:

Now, the average speed is given by the formula:

Ayshab's average speed for the whole journey is 36/11 mph.

For more information, refer to the link given below:

link

Ayshab's average speed for the whole journey =  

Step-by-step explanation:

Formula: Speed =

i.e. Time =

If Ayshab walked x miles at 4 mph, then time taken by him = hours

If she then walked 2x miles at 3 mph, then time for this period = hours

Average speed =

Hence, Ayshab's average speed for the whole journey =  

.there can be infinite values of m and n that can satisfy the above equation. for each value of m of m or n. there maybe infinite sets of solution for the above

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb