When a button is pressed, a computer program outputs a random even number greater than 0 less than 8. You press the button 4 tim
1 answer:
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Answer:
The number of ways Tony and Maria can both be selected for the committee is 8 ways.
Step-by-step explanation:
i) Tony and Maria have to be on the committee together or not at all.
ii) Let us consider Tony and Maria as combined as one person.
Therefore now we can say that the number of eligible people for the committee = 9 - 1 = 8.
iii) therefore the number of ways that both Tony and Maria can be selected for the committee are
= 8C1 =
Answer:
Cost of one book = $61
and cost of another book =$17
Step-by-step explanation:
Let the cost of one book be x and cost of another book be y.
According to given problem,
x = 3y+4 {one book cost four dollars more than three times the other}
And x + y =72 {two books cost $72}
So we got two equations:
x = 3y+4 -------------(1)
x + y = 72 ---------------(2)
Subtract equation (1) from (2)
i.e x + y - x = 72 - 3y -4
or y = 68 - 3y
or y +3y =68
or y =
or y = 17
Then x = 3y + 4 = 3×19 + 4 =61
Hence we got, cost of one book = x =$61
Cost of another book = y = $17