A bag contains six green balls, three red balls, and five yellow balls. If one ball is randomly selected from the ball, which of the following is the probability that the ball is red?
A. ½
B. 5/14
C. 3/7
D. 3/14
To find the probability of an event, we use the following the formula
To find the probability of drawing the red ball, we need to find the total number of balls in the bag.
Total number of balls in the bag=6+3+5=14 balls
The probability of drawing a red ball from the bag is 3/14.
Therefore, the Correct Answer is D.
More Questions on TEAS 7 Math
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Q #1: A teacher has asked all the students in the class which days of the week they get up after 9 a.m. which of the following is the best way to display the frequency for each day of the week?
A. Bar graph
B. Pie graph
C. Scatter plot
D. Histogram
Answer Explanation
A histogram will be appropriate to represent the time the students wake up every day of the week. The histogram is used to represent the frequency of the variable with another variable. In our case the vertical axis will represent the number of students (frequency) while the time of waking up on the horizontal axis.
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Q #2: Which of the following is the decimal form of 67.9%?
A. 67.9
B. 6,790
C. 0.679
D. 8.75
Answer Explanation
percentages are fractions with denominator equal to 100. Then, in decimal form:
The decimal form of 67.9% is 0.679.
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Q #3: Which of the following is the value of x in the equation below
A. x= -3 or x=4
B. x= -1 or x=2
C. x =-2 or x= 4
D. x= -3 or x= 5
Answer Explanation
We are tasked to find the unknown values of x in the given equation.
First, we add 8 to both sides of the equation.
Next, we apply the absolute rule:
If
, a>0, then u=a or u=-aFrom our resulting equation, a=14, which is greater 0. Then, the first condition (u=a) becomes
Solving for x
The second condition (u= -a) becomes
Solving for x
Thus, the value of x is 4 or -3
