A boy walks at a speed of 4 kmph. How much time does he take to walk a distance of 20 km? Show your work!

5 hours

Step-by-step explanation:

The relationship for distance, time, and speed is: , where d is the distance, s is the speed, and t is the time.

We are given the boy's speed is 4 kmph, so s = 4. We also know the distance is 20 km, so d = 20.

Then, rearranging the above formula, we have . We plug in the values of d and s into the equation to find t:

Thus, the answer is 5 hours.

Hope this helps!

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

step-by-step explanation: