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A woman received a bottle of perfume as a present. The bottle contains 1/2 oz of perfume. How many milliliters is this? (Enter a numeric value only. If rounding is necessary, round to the nearest whole number.)
- A. 10
- B. 15
- C. 14.5
- D. 20
Correct Answer: B
Rationale: To convert ounces to milliliters, note that 1 fluid ounce is approximately equal to 29.57 milliliters. The bottle contains 1/2 oz of perfume, so by multiplying 1/2 by 29.57, you get the equivalent in milliliters: 1/2 * 29.57 = 14.785. Rounding this to the nearest whole number gives you 15 milliliters, which is the correct answer. Therefore, the correct answer is 15 milliliters.
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What time is 5:00 am in military time (24-hour clock)? (Enter numeric value only.)
- A. 5000
- B. 500
- C. 1500
- D. 1700
Correct Answer: B
Rationale: The correct answer is B: 500. In military time, 5:00 am is represented as 0500. This is because the 24-hour clock system uses four digits, with the first two indicating the hour and the last two indicating the minutes. Choice A (5000) is incorrect as it has an extra digit. Choice C (1500) represents 3:00 pm, while choice D (1700) represents 5:00 pm. Therefore, the correct representation of 5:00 am in military time is 0500.
Express 0.025 as a ratio.
- A. 1:40
- B. 4:1
- C. 400:1
- D. 26:40:00
Correct Answer: A
Rationale: To convert 0.025 to a ratio, you first convert the decimal to a fraction by writing it as 25/1000, which simplifies to 1/40. Therefore, the correct ratio for 0.025 is 1:40. When expressing decimals as ratios, it's important to remember to simplify the fraction to its simplest form. In this case, 1:40 is the simplest form of the ratio for 0.025, making it the correct answer choice.
5 ½ divided by 2 ½ =
- A. 2 3/4
- B. 2 1/5
- C. 2
- D. 2 1/2
Correct Answer: B
Rationale: Correct Answer: B (2 1/5)
Rationale: Convert mixed numbers to improper fractions: 5 ½ = 11/2, 2 ½ = 5/2. Perform division: (11/2) ÷ (5/2) = 11/2 x 2/5 = 22/10 = 2 2/10 = 2 1/5.
Summary:
A: Incorrect, as it is equivalent to 2 3/4.
C: Incorrect, as it is a whole number and doesn't represent the result of the division.
D: Incorrect, as it is the initial divisor, not the result of the division.
What is the sum of the following numbers with all decimal places reported: 3.7 + 7.289 + 4 = ?
- A. 14.989
- B. 5.226
- C. 15
- D. 15.07
Correct Answer: A
Rationale: To find the sum, add the numbers together: 3.7 + 7.289 + 4 = 14.989. The correct answer is A, 14.989, as it accurately represents the sum of the given decimal numbers with all decimal places reported. Remember to sum up each digit correctly and include all decimal places in your final answer for accurate calculations. In this case, it is essential to maintain the precision of the decimal places provided for each number to ensure the accuracy of the final result. Adding the numbers correctly while considering the decimal places is crucial to obtaining the correct sum.
What temperature in Fahrenheit is 50°C? (Enter a numeric value only. If rounding is necessary, round to the nearest whole number.)
- A. 150°F
- B. 122°F
- C. 120°F
- D. 145°F
Correct Answer: B
Rationale: To convert Celsius to Fahrenheit, use the formula: F = (C x 9/5) + 32. Substituting 50 for C gives: F = (50 x 9/5) + 32 = 90 + 32 = 122°F. Therefore, 50°C is equal to 122°F. The correct answer is B.