Math HESI A2 Practice Test - Nurselytic

Correct Answer: B

Rationale:
To solve for x, first, subtract 2 from both sides of the equation: 4x = 16.
Then, divide by 4 to isolate x: x = 4.
Choice A, x = 4, is the correct answer as calculated.
Choice C, x = 5, is incorrect because the correct value of x is 4, not 5.
Choice D, x = 3, is incorrect as well, as the correct value of x is 4, not 3.

Correct Answer: A

Rationale:
To subtract mixed numbers, find a common denominator. In this case, the common denominator is 20. Convert 15 3/4 to 15 15/20.
Then, subtract 15 15/20 - 8 8/20 = 7 7/20.
Therefore, the correct answer is A.
Choice B is incorrect as it does not match the result of the subtraction.
Choice C is incorrect as it is not the result of the subtraction.
Choice D is incorrect as it represents the second number being subtracted, not the result of the subtraction.

Correct Answer: B

Rationale: The correct answer is B: 6000 milliliters. There are 1,000 milliliters in a liter.
To convert liters to milliliters, you multiply the number of liters by 1,000.
Therefore, 6 liters = 6 1,000 = 6,000 milliliters.

Choices A, C, and D are incorrect because they do not correctly convert liters to milliliters.

Correct Answer: C

Rationale:
Rationale: The correct answer is obtained by applying the formula for the circumference of a circle, which is \(C = \pi \times d\), where \(d\) is the diameter of the circle. By substituting the given diameter of 40cm into the formula and performing the calculation, we find that the circumference of the pizza is 125.6cm.

Correct Answer: A

Rationale:
To convert grams to milligrams, you need to multiply by 1,000 since there are 1,000 milligrams in a gram. So, 1,000 x 7 grams = 7,000 mg. This means that there are 7,000 milligrams in 7 grams.

Choices B, C, and D are incorrect because they do not correctly convert grams to milligrams.