You drive 6.0 km at 50 km/h and then another 6.0 km at 90 km/h. your average speed over the 12 km drive will be

64.2857 km/h

Step-by-step explanation:

Time taken to drive the first 6.0 km in hours = 6/50

Time take to drive another 6.0 km in hours = 6/90

Total time taken to drive 12 km in hours = (6/50) + (6/90)

= 6(50+90)/50x90

= 6x140/50x90

= 840/4500

The average speed over the 12 km is therefore 12 divided by 840/4500

= (12 x4500)/840

= 64.2857 km/h

Step-by-step explanation:

hello

the  speed is the relation between a distance traveled and the time used for it and it is given by the equation

Now, the average speed will be

Step 1

I drive 6.0 km at 50 km/h

from (1) it is possible to isolate t

Let

Step 2

then I drive 6.0 km at 90 km/h

Step 3

FInd total time and total displacement

step 4

finally, put these values into the equation(2)

V=64.29 km/h

Have a good day

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer