HESI A2 Practice Test Math

Correct Answer: C

Rationale: The correct answer is C: 2700 cu cm. To calculate the volume of a hemispherical bowl, we use the formula V = (2/3)πr³, where r is the radius. Given the diameter of 30cm, the radius is 15cm. Plugging in the values, V = (2/3)π(15)³ = (2/3)π(3375) = 2250π ≈ 7070.78 cu cm. Since the volume of a hemisphere is half of a sphere, we divide by 2 to get 3535.39 cu cm. However, the question asks for the volume of the bowl, not the hemisphere. Since the bowl has an open top, the volume will be double the volume of the hemisphere, giving us 7070.78 cu cm. Therefore, the correct answer is 2700 cu cm (half of the total volume). Choices A, B, and D

Correct Answer: A

Rationale: To calculate the total grams of carbohydrates in the product, you multiply the number of servings by the grams of carbohydrates per serving. In this case, 4 servings x 8 grams/serving = 32 grams of carbohydrates. Therefore, the correct answer is A. Explanation for other choices: B: 4 servings x 8 grams/serving does not equal 28 grams. C: 4 servings x 8 grams/serving does not equal 24 grams. D: 4 servings x 8 grams/serving does not equal 20 grams.

Correct Answer: A

Rationale: To add 5 2/9 and 1 2/9, first add the whole numbers: 5 + 1 = 6. Then add the fractions: 2/9 + 2/9 = 4/9. Combine the whole number and the fraction to get 6 4/9, which is the correct answer (A). Other choices are incorrect because they either do not consider adding the fractions (D), or incorrectly add only the whole numbers (C), or miscalculate the fractions (B).

Correct Answer: A

Rationale: The correct answer is A: 579 copies. To find the number of copies each person made, divide the total number of copies (3,475) by the number of people who used the copier (6). 3,475 ÷ 6 = 579. Each person made 579 copies. Summary: - Choice B (680 copies) is incorrect because it does not evenly divide into the total number of copies. - Choice C (670 copies) is incorrect because it is not an even division of the total number of copies. - Choice D (585 copies) is incorrect because it is not the result of dividing the total number of copies by the number of people who used the copier.

Correct Answer: B

Rationale: To convert ounces to pints, we know that 1 pint is equal to 16 ounces. Therefore, to find how many pints are in 56 ounces, we divide 56 by 16, which equals 3.5 pints. Hence, the correct answer is B: 3.5 pints. A: 3 pints - Incorrect. 56 ounces is more than 3 pints. C: 7 pints - Incorrect. 56 ounces equals 3.5 pints, not 7 pints. D: 8 pints - Incorrect. 56 ounces is less than 8 pints.