I.E.D. Warm-up Quiz #1 Spring 2013
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Jan 23 - Feb 1
Questions and Answers
- 1.
Evalute 2(a + b) - 3c if a = 3, b = 7, and c = 8
- A.
-4
- B.
44
- C.
12
- D.
-20
Correct Answer
A. -4Explanation
To evaluate the expression 2(a + b) - 3c, we substitute the given values for a, b, and c. Plugging in a = 3, b = 7, and c = 8, we get 2(3 + 7) - 3(8). Simplifying further, we have 2(10) - 24, which equals 20 - 24. Finally, subtracting 24 from 20 gives us -4. Therefore, the correct answer is -4.Rate this question:
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- 2.
What is the value of 3 (z - 7) + 12 if z = -3 ?
- A.
0
- B.
-10
- C.
-18
- D.
42
Correct Answer
C. -18Explanation
To find the value of the expression 3(z - 7) + 12 when z = -3, we substitute -3 for z in the expression. This gives us 3(-3 - 7) + 12. Simplifying further, we have 3(-10) + 12, which is equal to -30 + 12. Adding these values, we get -18. Therefore, the value of the expression is -18.Rate this question:
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- 3.
If w = -2, what is the value of the equation on the right?
- A.
-16
- B.
-8
- C.
8
- D.
24
Correct Answer
C. 8Explanation
When the value of w is substituted into the equation on the right, it results in the value of 8.Rate this question:
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- 4.
Find the odds of rolling a number less than or equal to three on a number cube.
- A.
1/2
- B.
1/1
- C.
1/3
- D.
5/6
Correct Answer
A. 1/2Explanation
The odds of rolling a number less than or equal to three on a number cube can be determined by counting the favorable outcomes and dividing it by the total number of possible outcomes. In this case, the favorable outcomes are rolling a one, two, or three, which gives us three favorable outcomes. The total number of possible outcomes on a number cube is six, since there are six sides. Therefore, the odds of rolling a number less than or equal to three is 3/6, which simplifies to 1/2.Rate this question:
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- 5.
A bag contains 5 blue marbles, 10 purple marbles, 7 white marbles, and 18 red marbles. What is the probability of randomly selecting a marble that is not red?
- A.
11/20
- B.
18/40
- C.
25/40
- D.
1/10
Correct Answer
A. 11/20Explanation
The probability of randomly selecting a marble that is not red can be calculated by dividing the number of marbles that are not red by the total number of marbles. In this case, there are 5 blue marbles, 10 purple marbles, and 7 white marbles, which adds up to 22 marbles that are not red. The total number of marbles is 5 + 10 + 7 + 18 = 40. Therefore, the probability is 22/40, which simplifies to 11/20.Rate this question:
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- 6.
Solve the equation: (2a-4) / 6 = 3/4
- A.
17/4
- B.
17/5
- C.
4/5
- D.
35/8
Correct Answer
A. 17/4Explanation
To solve the equation (2a-4) / 6 = 3/4, we can cross multiply to eliminate the fractions. Multiplying both sides of the equation by 6 gives us 2a - 4 = 18/4. Simplifying the right side gives us 2a - 4 = 9/2. Adding 4 to both sides gives us 2a = 17/2. Finally, dividing both sides by 2 gives us a = 17/4. Therefore, the correct answer is 17/4.Rate this question:
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- 7.
A 375-mile car trip used 17 gallons of gas. How much gas would you use on a 250-mile trip?
- A.
11.3 gallons
- B.
11 miles
- C.
22.5 gallons
- D.
25.5 gallons
Correct Answer
A. 11.3 gallonsExplanation
To find out how much gas would be used on a 250-mile trip, we can set up a proportion using the given information. The ratio of miles to gallons for the 375-mile trip is 375 miles/17 gallons. We can set this equal to the ratio of miles to gallons for the 250-mile trip, which is 250 miles/x gallons. Cross-multiplying and solving for x, we get x = (250 * 17) / 375 = 11.3 gallons. Therefore, the correct answer is 11.3 gallons.Rate this question:
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- 8.
If you have a standard 52-card deck of playing cards, what is the probability of drawing the king of hearts?
- A.
1/4
- B.
1/13
- C.
1/26
- D.
1/52
Correct Answer
D. 1/52Explanation
The probability of drawing the king of hearts from a standard 52-card deck is 1/52. This is because there is only one king of hearts in the deck, and there are a total of 52 cards. Therefore, the chance of drawing the king of hearts is 1 out of 52 possible outcomes.Rate this question:
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- 9.
Solve the following proportion: w / 30 = 5 / 15
- A.
W = 10
- B.
W = 15
- C.
W = 30
- D.
W = 5
Correct Answer
A. W = 10Explanation
To solve the proportion, we can cross-multiply. Multiply 5 by 30 and divide the result by 15 to find the value of w. This gives us w = 10.Rate this question:
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- 10.
Solve the following: (3n + 4) / 2 = 11
- A.
N = 6
- B.
N = 26/3
- C.
N = 3/26
- D.
N = 3
Correct Answer
A. N = 6Explanation
To solve the given equation, we can start by isolating the variable n. First, we multiply both sides of the equation by 2 to eliminate the fraction: 3n + 4 = 22. Then, we subtract 4 from both sides to get 3n = 18. Finally, we divide both sides by 3 to solve for n, giving us n = 6.Rate this question:
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Mar 21, 2023Quiz Edited by
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Sep 14, 2012Quiz Created by
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