TEAS Practice Test Math

Correct Answer: A

Rationale: The correct answer is A: 0.75 hectares. To calculate the area of the soccer field in square meters, you multiply the length by the width (100m x 75m = 7500 square meters). To convert this to hectares, you divide by 10,000 (7500 ÷ 10,000 = 0.75 hectares). Choice B (7.5 hectares) is incorrect because it is 10 times the correct answer. Choice C (7,500 hectares) is incorrect because it is 1,000 times the correct answer. Choice D (75,000,000 hectares) is incorrect because it is 100,000 times the correct answer.

Correct Answer: C

Rationale: The correct answer is C because it demonstrates a negative correlation between two variables. As tennis balls age, they tend to have less bounce, indicating that an increase in one variable (age) leads to a decrease in the other variable (bounce). This negative correlation shows an inverse relationship between the age of the tennis balls and their bounce level. Choices A, B, and D do not demonstrate a negative correlation as they either show a positive correlation or do not show a correlation at all between the variables mentioned.

Correct Answer: C

Rationale: To find out how much ammonia is needed, we first calculate the total amount of ammonia needed for 230 gallons of solution. Since 1 gallon requires 6 oz of ammonia, for 230 gallons, we multiply: 230 (gallons) x 6 (oz) = 1380 oz of ammonia. Therefore, the correct answer is C: 1380 oz. Other choices are incorrect because: A: 1380 gallons - This does not make sense as we are calculating the amount of ammonia, not the total volume of cleaning solution. B: 6900 gallons - This is not a logical calculation based on the given information. D: 1400 oz - This is close to the correct answer but miscalculates the total amount of ammonia required.

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.

Correct Answer: D

Rationale: To find the correct amount of vanilla in mL, first, multiply 5.5 (teaspoons) by 4.93 (mL per teaspoon) to get 27.115 mL. Then round to the nearest whole number, giving 27 mL. Therefore, choice D is correct. Choices A, B, and C are incorrect as they do not result from the correct conversion calculation.