(b) Rowena walks 2km at an average speed of xkm/h (i) write down an expression in terms of x for the time taken

(ii) Rowena then walks 3km at an average speed of (x-1)km/h

The total time taken to walk the 5km is 2 hours.

(a) Show that 2x^2-7x+2

yes yes yes yes yes yes yes yes yes

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

i think it is 18

step-by-step explanation: