The sum of 25/4 and three times a number is equal to 3/4 subtracted from four times the number. find the number

1 answer:

5 0

For an instance, n represents the number
$\frac{25}{4}+n=4n- \frac{3}{4}$
$n-4n=-\frac{3}{4}-\frac{25}{4}$
$-3n=-\frac{28}{4}$
$n=-\frac{28}{4} \times -\frac{1}{3}$
$n= \frac{28}{12}$
$n= \frac{7}{3}$

The number is 7/3

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d. Given that the roll is greater than 3, what is the conditional probability that the roll is even? $P (E|G3) = \frac{P (E\bigcap G3)}{P(G3)} = \frac{2/6}{3/6} = \frac{2}{3}$