andrewmena05
31.01.2020 •
Mathematics
Alice is counting a cash register at the end of the night she has $1015 in $5 bills and $10 bills.if she has 138 bills all together, how many of each type does she have?
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Ответ:
f+t=138
f=138-t and we are told that:
5f+10t=1015, using f from above in this equation gives you:
5(138-t)+10t=1015
690-5t+10t=1015
690+5t=1015
5t=325
t=65 and since f=138-t,
f=73 so
Alice has 73 fives and 65 tens.
Ответ:
What is the interquartile range of the scores? 30
Step-by-step explanation:
Give a known data point from the box plot that represents a striking deviation in the data. 65