HESI Mathematics

HESI Mathematics Related

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Divide: 18 ÷ 0.12 =

  • A. 150
  • B. 180
  • C. 15
  • D. 16
Correct Answer: A

Rationale: To divide 18 by 0.12, we can convert the divisor to a whole number by moving the decimal point two places to the right, making it 12. Now, we perform the division 18 ÷ 12 = 1.5. However, since we initially moved the decimal point in the divisor, we must move it back in the quotient to get the final answer of 150.

Choice A is correct (150) because it correctly follows the steps of dividing 18 by 0.12 and adjusting for the decimal point.

Choices B, C, and D are incorrect because they do not accurately represent the result of dividing 18 by 0.12 using the correct decimal manipulation. Choice B (180) is the result of a simple division of 18 by 0.12 without considering the decimal point adjustment. Choice C (15) and Choice D (16) are incorrect results obtained without the proper conversion of the decimal divisor.

You may also like to solve these questions

What is the result of subtracting 2 5/8 from 7/8, reduced to lowest terms?

  • A. 1 3/4
  • B. 1 6/8
  • C. 1 1/4
  • D. 1 5/8
Correct Answer: A

Rationale: To subtract mixed numbers, convert them to improper fractions. 2 5/8 as an improper fraction is 21/8. Subtracting 7/8 from 21/8 results in 14/8. Simplifying 14/8 to lowest terms gives 1 3/4, which is the final answer.

What is the result of dividing 0.9 by 3?

  • A. 3
  • B. 30
  • C. 0.3
  • D. 0.9
Correct Answer: C

Rationale: When dividing 0.9 by 3, you perform the operation 0.9 · 3, which equals 0.3. Dividing a number by another number means finding how many times the divisor can fit into the dividend. In this case, 3 can fit into 0.9 a total of 0.3 times, resulting in the answer of 0.3.

What is the result of multiplying 20.3 by 2? (Enter a numerical value only.)

  • A. 40.5
  • B. 40.6
  • C. 41
  • D. 39.5
Correct Answer: B

Rationale: To find the result of multiplying 20.3 by 2, you simply multiply the two numbers: 20.3 x 2 = 40.6. When multiplying decimals, multiply as if they were whole numbers and then adjust the decimal point in the product. In this case, the product is 40.6. Therefore, the correct answer is 40.6, rounded to the nearest tenth.

How many liters are in 35 milliliters?

  • A. 3.5
  • B. 0.35
  • C. 0.035
  • D. 350
Correct Answer: C

Rationale: To convert milliliters to liters, you divide by 1000 since there are 1000 milliliters in a liter. Therefore, 35 milliliters is equal to 35/1000 = 0.035 liters. The correct answer is option C. Remember that when converting between milliliters and liters, you are essentially changing the unit of measurement, so the numerical value changes accordingly. It's important to understand these conversion factors to work accurately with different units of volume.

A mailman delivers mail to 540 households. Yesterday he delivered a total of 5,400 pieces of mail on his route. What was the average number of pieces he delivered to each household? (Enter numeric value only. Round to whole number.)

  • A. 10
  • B. 12
  • C. 14
  • D. 8
Correct Answer: D

Rationale: Correct Answer: D (8)

Rationale:
1. Total pieces delivered = 5,400
2. Number of households = 540
3. Average pieces per household = Total pieces delivered / Number of households
4. Average = 5,400 / 540 = 10
5. Therefore, the average pieces delivered per household is 10, so choice D (8) is the correct answer.

Summary:
A: 10 - Incorrect. This is the calculated average, not the answer.
B: 12 - Incorrect. This is not the correct average based on the given information.
C: 14 - Incorrect. This is not the correct average based on the given information.

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