Q #1: Which of the following is the value of x in the equation below.
(|2x - 4| - 10 = 2)
A.
x=4 or x=-8
B.
x=-4 or x=8
C.
x=-2 or x=1
D.
x=-3 or x=5
Answer Explanation
Explanation:
We need to find the value of x from the given equation. First, we move the value of 10 to the right-hand side of the equation.
Add 10 to both sides of the equation
Next, we apply the absolute rule:
If , a>0, then u=a or u=-a
In this case a=12, which is greater 0. Then, the first condition becomes
Solving for x
The second condition becomes
Solving for x
Then, the value of x is -4 or 8.
Q #2: A bag contains three green balls, four red balls, and six yellow balls. If one ball is randomly selected from the ball, which of the following is the probability that the ball is yellow?
A.
10/13
B.
4/13
C.
3/13
D.
6/13
Answer Explanation
Q #3: Which of the following is the decimal form of 34.9%?
A.
3,490
B.
3.49
C.
0.349
D.
34.9
Answer Explanation
To convert a percentage to a decimal, divide the given percentage by 100. So, 34.9% becomes:
The decimal form of 34.9% is 0.349.
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