P(boy) is asking for the probability that a boy will be chosen to read a poem out loud. Since there are 15 boys, we can get the probability by dividing this with the total number of students. This is because out of all the students, there is an equal possibility that each of the 15 boys will be chosen.

$\frac{15}{15+13}= \frac{15}{28}=0.5357$

ANSWER: The probability that a boy is selected is 0.5357 or 53.57%

8 0

3 years ago

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Subtract seven more than twice a number from the square of one-third of the number to get zero?

andreev551 [17]

Let us assume the unknown number = x
Now we have to follow the details given in the question to bring out the actual equation. In this case there will be only one equation.
(x/3)^2 - (2x + 7) = 0
(x/3)^2 = 2x + 7
x^2/9 = 2x + 7
x^2 = 9(2x + 7)
x^2 = 18x + 63
x^2 - 18x = 63
This would be the final equation for the given problem. his problem needs any solver to understand the words very minutely.

5 0

4 years ago