Answer:

Step-by-step explanation:
When two or more quantities have the same exponents, their bases can be multiplied together.
yo sup??
The number can't be a probability of an event cause probability of an even lied between 0 and 1 whereas the number given to use is -0.25.
Since probability can't be negative therefore it isn't a probability of an event.
Hope this helps.
Answer:
19
Step-by-step explanation:
40-21+19
Answer:
21% of his students wear glasses
Step-by-step explanation:
The answer is 21% because 21/100 =21
Hope it helps.