HESI A2 Practice Test Math

Correct Answer: A

Rationale: To evaluate xm - 2m when x = -2 and m = -3: Substitute x and m into the expression: (-2)(-3) - 2(-3) Simplify: 6 + 6 = 12 Therefore, the correct answer is A (12). The other choices are incorrect as they do not match the correct calculation.

Correct Answer: C

Rationale: The correct answer is C: 0.09%. To convert 0.0009 to a percentage, you move the decimal point two places to the right, resulting in 0.09%. Option A (0.009%) is incorrect as it would be the equivalent of 0.00009. Option B (0.9%) is incorrect as it represents 0.009. Option D (9%) is incorrect as it is equivalent to 0.09, which is 100 times greater than the given value.

Correct Answer: A

Rationale: To find the full number, we can set up the equation: 0.30x = 18, where x is the full number. Solving for x, we get x = 18 / 0.30 = 60. Therefore, the correct answer is A (60). Choice B (30): 0.30 of 30 is 9, not 18. Choice C (40): 0.30 of 40 is 12, not 18. Choice D (45): 0.30 of 45 is 13.5, not 18.

Correct Answer: A

Rationale: First, determine how many peach pies Erin has left after giving 3.75 to Rose: 6.25 - 3.75 = 2.5 peach pies. Since she can't have half a pie, it rounds down to 2. So, Erin has 2 peach pies left, making option A the correct answer. Option B, C, and D are incorrect as they do not reflect the accurate calculation of the remaining pies.

Correct Answer: B

Rationale: To find the equivalent dosage in milligrams, multiply the fraction of a tablet (3/4) by the total dosage in a full tablet (500mg). Calculation: (3/4) * 500 = 375mg Therefore, the correct answer is B (425mg). Other choices are incorrect because: A: 375mg - This is the incorrect calculation of the dosage equivalent. C: 450mg - This is not the correct result of the calculation. D: 475mg - This is also an incorrect calculation based on the given information.