What is 31/4
written as a decimal?
a. 6.75
b.7.50
c.7.75
d.8.25
: )

7.75

Step-by-step explanation: In order to write 31/4 as a decimal, we need to find a fraction equivalent to 31/4 with a 100 in the denominator. Notice that if we multiply both the numerator and denominator of 31/4 by 4, we get the equivalent fraction 775/100 which we can now write as a decimal. Remember that the hundredths place is two places to the right of the decimal point so we can write 775/100 as 7.75.

Therefore, 775/100 is equivalent to 7.75.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

b.my answer is b.

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