Math Practice TEAS Test

Correct Answer: A

Rationale: To find the percentage of students with hazel or green eyes, add the number of students with hazel and green eyes (5+2=7). Then, divide this sum by the total number of students (7/30). Finally, multiply the result by 100 to convert it to a percentage (7/30 * 100 = 23%). Therefore, the correct answer is A (0.23). Choice B (0.3) is incorrect as it is not the accurate percentage of students with hazel or green eyes. Choice C (0.47) and choice D (0.77) are also incorrect as they do not represent the correct calculation of the percentage based on the given information.

Correct Answer: B

Rationale: The correct answer is B (0.151). To calculate the percentage of total rainfall in October, you divide the amount of rainfall in October by the total rainfall in the timeframe. In this case, 0.151 is the correct percentage of rainfall in October. Choice A (0.135), C (0.169), and D (0.177) are incorrect as they do not accurately represent the percentage of rainfall in October when compared to the total rainfall.

Correct Answer: A

Rationale: The correct answer is A: 2.54 centimeters in an inch; 0.393 inches in a centimeter. The conversion factor between inches and centimeters is 2.54, derived from the definition of an inch. To convert inches to centimeters, you multiply by 2.54. Conversely, to convert centimeters to inches, you divide by 2.54. The other choices are incorrect because they do not reflect the accurate conversion factor between inches and centimeters. B and C have incorrect conversion ratios, while D has an incorrect relationship between inches and centimeters.

Correct Answer: B

Rationale: The correct answer is B: 5,280 ft. There are 5,280 feet in a mile because a mile is defined as 5,280 feet. This standard measurement is widely accepted in the United States. The other choices (A, C, D) are incorrect because they do not correspond to the precise conversion factor for a mile. Choice A (1,000 ft) is too small, Choice C (2,000 ft) is also too small, and Choice D (10,000 ft) is too large. Therefore, B is the correct answer as it accurately reflects the established conversion of feet in a mile.

Correct Answer: A

Rationale: The correct answer is A. To distinguish between the three types of graphs in scatterplots, look at the patterns. Linear graphs show a straight line, quadratic graphs show a U-shape, and exponential graphs rise or fall quickly in one direction. This is because linear relationships have a constant rate of change, quadratic relationships have a squared relationship, and exponential relationships have a constant ratio of change. Choice B is incorrect as it does not accurately describe the characteristics of each graph type. Choice C is incorrect as it mentions zigzag lines for linear graphs, which is not a typical characteristic. Choice D is incorrect as it describes a W-shape for quadratic graphs, which is not accurate. Overall, choice A provides a clear and accurate description of how to distinguish between linear, quadratic, and exponential graphs in scatterplots.