Answer:
Number 27:Population density refers to the number of people who live in a defined land area (usually square miles or square kilometers). So, if two million people live in ten square miles, the population density is two hundred thousand people per square mile.
Number 29:Your heart beats about 100,000 times in one day. And about 35 million times in a year.And 128 beats in one minute
Step-by-step explanation:
The speed of a bus that travels 250 km in 2 hours is 145 because you have to divide 250 km and 2 hours which gives 145.
Hope this helps:)
Answer:
Step-by-step explanation:
Urn has 3 green and 4 yellow
we choose 2 balls randomly
so samples space for this selection is
![\left [ \left ( Y,G\right ),\left ( G,Y\right ),\left ( G,G\right ),\left ( Y,Y\right )\right ]](https://tex.z-dn.net/?f=%5Cleft%20%5B%20%5Cleft%20%28%20Y%2CG%5Cright%20%29%2C%5Cleft%20%28%20G%2CY%5Cright%20%29%2C%5Cleft%20%28%20G%2CG%5Cright%20%29%2C%5Cleft%20%28%20Y%2CY%5Cright%20%29%5Cright%20%5D)
Event A is choosing differently colored ball form sample space
P(A)=Probability of event (G,Y)+Probability of event (Y,G)

