Answer:
it could be 20 30 and 25
Step-by-step explanation:
Answer:
It is stratified random sampling.
Step-by-step explanation:
Stratified random sampling is a method of sampling that involves the division of a population into smaller sub-groups known as <em>strata.</em>
The strata are formed based on members' shared attributes or characteristics, in this case their race.
Stratified random sampling is also called <em>proportional random sampling</em> or <em>quota random sampling</em>
Answer:
3 gallons.
Step-by-step explanation:
If you add three gallons of water to 1 gallon of antifreeze, then there are 4 gallons total. That means that 1/4 of the solution is antifreeze, and 1/4 is equal to 25%.
Answer:
<u>12,240 meters</u>
Step-by-step explanation:
Since sound travels 340 meters per second, you multiply 340 by 36 seconds, and get the answer of <u>12,240 meters.</u>