TEAS Practice Test Math

Correct Answer: A

Rationale: To find the least common denominator (LCD), we need to find the least common multiple (LCM) of the denominators. The denominators are 2, 3, and 5. The LCM of 2, 3, and 5 is 30, which is the smallest number that all three denominators divide into evenly. Therefore, the correct answer is A: 30. Choice B: 25 is not the correct answer because it is not divisible by 2, 3, and 5. Choice C: 7 is not the correct answer because it is not divisible by 2, 3, and 5. Choice D: 19 is not the correct answer because it is not divisible by 2, 3, and 5.

Correct Answer: A

Rationale: The correct answer is A: One. When the number 1 is raised to any power, the result is always 1. This is because any number raised to the power of 1 is equal to that number itself. In this case, 1 raised to any power will always be 1. Summary: Choice B (Itself) is incorrect because raising 1 to any power does not result in the number itself, but always in 1. Choice C (Zero) is incorrect as any number raised to the power of 0 is 1, not 0. Choice D (Two) is incorrect as it is not possible for 1 raised to any power to equal 2.

Correct Answer: B

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: A

Rationale: The correct answer is A because to convert pounds to kg, you need to multiply by the conversion factor of 2.2, and to convert kg to pounds, you need to divide by 2.2. This is because 1 pound is equal to 0.453592 kg, which is approximately 2.2 pounds per kg. Therefore, multiplying by 2.2 for pounds and dividing by 2.2 for kg ensures the correct conversion between the two units. Choices B, C, and D are incorrect because they do not correspond to the correct conversion factor between pounds and kg.

Correct Answer: C

Rationale: The correct answer is C: Dependent. In this study, the weight of the babies is the variable being measured and studied in relation to different time intervals after birth. The weight of the babies depends on the time intervals, making it the dependent variable. Other choices are incorrect because: A: Independent variable is the variable that is manipulated or controlled by the researcher, in this case, time intervals are the independent variable. B: Control variable is a variable that is kept constant to prevent it from influencing the results, weight is not a control variable. D: Constant is not applicable in this context as weight is not a constant value in the study, it varies with time intervals.