HESI A2 Math Practice

Correct Answer: B

Rationale: To find the rate of calories burned per mile, divide the total calories burned (2276) by the total miles run (21.4). So, 2276 / 21.4 = 106.4, which is choice B. This calculation gives us the average rate of calories burned per mile. Choices A, C, and D are incorrect as they do not match the calculated value. Therefore, the correct answer is B based on the calculation method.

Correct Answer: B

Rationale: The correct answer is B: 1/6. There is only one side on the die that shows a 4 out of six possible outcomes. Thus, the probability of rolling a 4 is 1 out of 6, which simplifies to 1/6. A: 1/2 - Incorrect. The die has 6 sides, not 2. C: 1/3 - Incorrect. There is only one side with a 4, not three. D: 1/2 - Incorrect. Again, the die has 6 sides, not 2.

Correct Answer: D

Rationale: The correct answer is D (50%). To determine the probability of getting an even number when rolling a dice, we first need to identify the total possible outcomes, which is 6 (numbers 1 to 6 on a dice). Out of these 6 outcomes, 3 are even numbers (2, 4, 6). Therefore, the probability of getting an even number is calculated as the number of favorable outcomes (even numbers) divided by the total possible outcomes, which is 3/6 = 1/2 = 50%. Choice A (16%) is incorrect because it represents the probability of rolling a specific number (1 out of 6) rather than the probability of rolling an even number. Choice B (33%) and Choice C (66%) are also incorrect as they do not accurately represent the probability of rolling an even number based on the total number of outcomes.

Correct Answer: B

Rationale: To convert ounces to milliliters, we need to know that 1 oz is approximately 29.57 mL. Given the bottle contains 3/4 oz of perfume: (3/4) * 29.57 = 22.175 mL, which rounds to 22.5 mL. Thus, the correct answer is B (22.5 mL). Choice A (25 mL) is incorrect as it is the result of rounding up 22.175 mL. Choices C (15 mL) and D (20 mL) are incorrect as they do not align with the conversion factor of 1 oz to mL.

Correct Answer: C

Rationale: To find the divisor, we use the formula Dividend = Divisor x Quotient. Given Dividend = 12 and Quotient = 4, we substitute these values into the formula: 12 = Divisor x 4. Solving for Divisor, we get Divisor = 12 / 4 = 3. Therefore, the correct answer is C (4). Choice A (3) is incorrect because 12 divided by 3 is 4, not the given quotient of 4. Choice B (6) is incorrect because 12 divided by 6 is 2, not the given quotient of 4. Choice D (9) is incorrect because 12 divided by 9 is 1.33, not the given quotient of 4.