a rancher has a herd of different colored horses in his corral ten of the horses are black six of them are brown he also has eight two color horses an

HESI A2

HESI A2 Quizlet Math

1. A rancher has a herd of different-colored horses in his corral. Ten of the horses are black, six are brown, eight are two-color horses, and three are all white. What percentage of the horses are brown? (Round to the nearest whole number if necessary).

A. 15%
B. 20%
C. 25%
D. 30%

Correct answer: B

Rationale: To find the percentage of brown horses, first calculate the total number of horses: 10 black + 6 brown + 8 two-color + 3 all white = 27 horses. Then, calculate the percentage of brown horses: (6 ÷ 27) × 100 = 22.22%, which rounds to 20%. Choice B, 20%, is the correct answer. Choice A, 15%, is incorrect as it does not reflect the accurate percentage of brown horses. Choice C, 25%, is incorrect as it overestimates the percentage of brown horses. Choice D, 30%, is incorrect as it also overestimates the percentage of brown horses.

2. _____ are very ancient people.

A. Chinese
B. The Greeks
C. Romans
D. Egyptians

Correct answer: A

Rationale: The correct answer is 'Chinese.' In the context of ancient civilizations, 'Chinese' is appropriately used to refer to a very ancient culture like the Shang dynasty (c. 1600–1046 BC) or the Zhou dynasty (1046–256 BC). The other choices ('The Greeks,' 'Romans,' and 'Egyptians') are also ancient civilizations, but they are not the best fit in the given sentence as they do not match the description of 'very ancient people.' The Greeks, Romans, and Egyptians are ancient too, but 'very ancient people' specifically points towards Chinese civilization during its early periods. Therefore, 'Chinese' is the most suitable option.

3. What is the meaning of the word innocuous as used in the first paragraph?

A. Undiscovered
B. Harmless
C. Imperceptible
D. Purposeless

Correct answer: B

Rationale: The word "innocuous" in this context means harmless, indicating that most nail abnormalities are not dangerous.

4. Which is a secondary defense for the body against pathogens?

A. Tears
B. Urine
C. Inflammation
D. Mucus

Correct answer: C

Rationale: Inflammation is a secondary defense mechanism for the body against pathogens. When tissues are injured or infected, inflammation occurs as a protective response involving increased blood flow, white blood cell migration, and tissue repair. This process helps contain and eliminate pathogens, preventing them from spreading further in the body. Tears (Choice A) are a primary defense containing lysozyme and other antimicrobial agents. Urine (Choice B) is typically considered a non-specific defense mechanism due to its flushing action in the urinary tract. Mucus (Choice D) acts as a physical barrier and traps pathogens, also considered a primary defense mechanism.

5. Convert the fraction 7/8 into a decimal and percent.

A. Decimal: 0.875, Percent: 87.5%
B. Decimal: 0.78, Percent: 78%
C. Decimal: 0.88, Percent: 88%
D. Decimal: 0.90, Percent: 90%

Correct answer: A

Rationale: To convert the fraction 7/8 into a decimal, you divide 7 by 8, which equals 0.875. To express this decimal as a percentage, you multiply it by 100 to get 87.5%. Choices B, C, and D are incorrect because they do not represent the correct conversion of the fraction 7/8 into a decimal and a percent.