You need to find the total distance and the total time. The total distance is two times the distance to school, 2d.s=d/t=>t=d/sWhere s is speed, d is distance and t is time. So the time taken to get to school is:d/s1and the time taken to get back is:d/s2so the total time is:d/s1+d/s2=d(1/s1+1/s2)So, as speed = distance/time, divide the total distance by the total time:2d/d(1/s1+1/s2)=2/(1/s1+1/s2)=2/(1/20+1/40)=80/3≈26.7km/hr
Answer:
C(x) = 38.7
Step-by-step explanation:
C(x)= 0.09(130)+27
C(x)= 11.7+27
C(x)= 38.7
Answer:
2 dollars
Step-by-step explanation:
For 4 pounds of fruit he pays 8 dollars. If you use the unit rate it is 2 dollars for every one pound of fruit
Answer:
1/6
Step-by-step explanation:
number cube 6 faces less than 2, only 2 possibilities, leaving us with a fraction of 2/6=1/3
tails is a 50 percent chance or 1/2
3/6 time 2/6
equals:
1/6
the probability of rolling a number less than 2 and flipping tails on a coin is 1/6
find probability of event a: number cube and multiply it by probability of event b: coin
First one is 9 second one is 8 add the shirts together and the shorts and it gets 9 then one gets wet take away one that 8 outcomes so first is 9 second is 8
