What is the result of dividing 40.3 by 4.8?

Correct Answer: D

Rationale: When dividing 40.3 by 4.8, the correct result is approximately 8.4. To obtain this result, you can perform the division 40.3 · 4.8 = 8.395833... which rounds to 8.4. The other choices, A, B, and C, are incorrect. Choice A, 0.084, is incorrect as it is not the result of the division provided. Choice B, 84, is incorrect as it is the result of multiplying 40.3 and 4.8 instead of dividing them. Choice C, 0.84, is incorrect as it is not the correct result when dividing 40.3 by 4.8. It is crucial for individuals in various professions to be precise in mathematical calculations for tasks such as accurate medication administration and dosage measurements. Therefore, the correct answer is D, 8.4.

Correct Answer: B

Rationale: In this question, the correct answer is B) 50, which is the result of multiplying 10 by 5. The rationale behind this is based on the basic principles of multiplication. When you multiply 10 by 5, you are essentially adding ten five times, which equals 50. Option A) 65 is incorrect because it is the result of adding 10 and 5 rather than multiplying them. Option C) 45 is incorrect as it is the result of multiplying 9 by 5. Option D) 55 is incorrect as it is the result of adding 10 and 5 together. This question on multiplying 10 by 5 is fundamental in math as it reinforces the concept of multiplication as repeated addition. Understanding this concept is crucial for building a strong foundation in mathematics, which is essential for more advanced mathematical operations later on. Mastering basic multiplication facts like 10 times 5 is important for solving more complex math problems efficiently and accurately.

Correct Answer: C

Rationale: To find the percentage of 8 in 40, divide 8 by 40 to get 0.2. Multiply this result by 100 to convert it to a percentage: 0.2 100 = 10%. Therefore, 8 is 10% of 40, making choice C the correct answer. Choices A, B, and D are incorrect percentages calculated from incorrect divisions and multiplications.

Correct Answer: C

Rationale: In this math question from the HESI A2 Quizlet, the correct answer is C) 27. To explain why this is the correct answer, we can calculate three tenths of 90 by multiplying 90 by 0.3 (which is the same as dividing by 10 and then multiplying by 3). So, 90 x 0.3 = 27. Option A) 18 is incorrect because it represents 2 tenths of 90, not 3 tenths. Option B) 45 is incorrect because it represents half of 90, not 3 tenths. Option D) 36 is incorrect because it represents 4 tenths of 90, not 3 tenths. Educationally, understanding fractions and decimals is crucial for basic math competency. This question assesses the test-taker's ability to convert fractions to decimals and perform simple multiplication. It also reinforces the concept of tenths and their relationship to whole numbers. Students should practice these types of questions to build fluency in working with fractions and decimals, which are foundational skills for more complex math concepts.

Correct Answer: A

Rationale: First, convert the child's weight from pounds to kilograms: 44 lb · 2.2 = 20 kg. Next, calculate the required dosage: 20 kg 20 mg/kg = 400 mg. Since each tablet contains 80 mg, divide the total dosage by the dosage per tablet: 400 mg · 80 mg/tablet = 5 tablets. Therefore, the correct answer is 5 tablets. Choice B is incorrect because it does not account for the actual number of tablets needed. Choice C is incorrect as it is an underestimation of the required tablets. Choice D is incorrect as it is an underestimation of the required tablets.