When Ms Shreve randomly selects a student in her class, she has 1/3 probability of selecting a boy.
A: If her class has 36 students, how many boys are in her class?
B: if there are 11 boys in her class, how many girls are in her class?
C: what is the probability that she will select a girl??
I have a general idea on this but I don't know if it's right.
Anyone?
A. 1/3 * 36 = 12 Boys.
B. 36 - 11 = 25 Girls.
C. p = 25/36 =
On graph paper, draw line segment AB if A (6, 2) and B (3, 5). 2-36 HW eTool (Desmos) Homework Help ✎. Click in the lower right corner of the graph to view it in full-screen mode. Desmos Accessibility
Reflect AB across the line x = 3 and connect points A and A′. What shape is created by this reflection? Be as specific as possible.
On graph paper, use a table to make a complete graph of y = x2 − 2x − 8.
a)Write the coordinates of the y-intercept. What is the connection between the y‑intercept and the equation y = x2 − 2x − 8?
b)Write the coordinates of the x-intercepts.
c)What is the lowest point on the graph?
To answer these questions, we can use the concept of probability. Probability measures the likelihood of an event occurring. In this case, we have the probability of selecting a boy in the class, which is 1/3.
A: If the probability of selecting a boy is 1/3, we can determine the number of boys in the class if we know the total number of students.
To find the number of boys, we can set up the equation: (number of boys) / (total number of students) = 1/3.
Given that the total number of students in the class is 36, we can solve for the number of boys:
(number of boys) / 36 = 1/3
(number of boys) = 36 * (1/3)
(number of boys) = 12
Therefore, there are 12 boys in her class (A).
B: If there are 11 boys in her class, we can determine the number of girls by subtracting the number of boys from the total number of students.
To find the number of girls, we can use the equation: (number of girls) = (total number of students) - (number of boys).
Given that there are 11 boys and the total number of students is 36:
(number of girls) = 36 - 11
(number of girls) = 25
Therefore, there are 25 girls in her class (B).
C: To find the probability of selecting a girl, we need to know the total number of students and the number of girls in the class.
The probability of selecting a girl can be calculated by dividing the number of girls by the total number of students.
Using the values from Part B, where there are 25 girls and a total of 36 students:
Probability of selecting a girl = (number of girls) / (total number of students)
Probability of selecting a girl = 25 / 36
Therefore, the probability of selecting a girl is 25/36 (C).