Answer:
The easiest way to do this is to multiply the denominators by each other.
5*3=15
Now, all we have to do is multiply the numerators by what we multiplied the denominators by, to make it equal.
3*3=9
2*5=10
Now all we have to do is add.
9/15+10/15=19/15 or 1 and 4/15.
Hope this helps!
Step-by-step explanation:
The first expression, 12C3, is the right answer. There is no limitation saying that the team must be made up of one student from each year level. Furthermore, no distinction has been made among the three players (no assignments of Boards 1, 2, or 3), as the question just asks how many different groups. Since order does not matter, this is a combination. (If order mattered, this would be a permutation).
.722 mols of H2 because hydrogen gas molar mass is 2.02 so divide 1.46/2.02
Your answer should be 264.
Answer=4000ft
There are 3280.84 feet in 1 kilometer
1km=3280.84ft
4000ft >3280.84 ft
therefore, 4000ft is longer than 1 km
4000ft>1km
