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Mathematics Flashcards

7 cards from real CHSPE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Mathematics flashcards as text

  1. If 3 workers can complete a job in 8 days, how many days will it take 6 workers to complete the same job?

    Answer: 4 days

    Total work = 3 × 8 = 24 worker-days; 24 ÷ 6 = 4 days.

  2. Which inequality is represented by the solution set x ≥ −2?

    Answer: 3x − 1 ≥ −7

    3x − 1 ≥ −7 → 3x ≥ −6 → x ≥ −2.

  3. A square has an area of 169 cm². What is the length of one side?

    Answer: 13 cm

    Side = √169 = 13 cm.

  4. A student scored 82, 90, 74, and 88 on four tests. What score is needed on the fifth test to have a mean of 85?

    Answer: 91

    Target total = 85 × 5 = 425; current total = 334; 425 − 334 = 91.

  5. In a right triangle, one leg is 8 cm and the hypotenuse is 17 cm. What is the other leg?

    Answer: 15 cm

    Using the Pythagorean theorem: b = √(17² − 8²) = √(289 − 64) = √225 = 15 cm.

  6. What is 15% of 240?

    Answer: 36

    15% × 240 = 0.15 × 240 = 36.

  7. Which of the following represents a function?

    Answer: {(2,5),(3,5),(4,5)}

    A function requires each x-value to map to exactly one y-value; {(2,5),(3,5),(4,5)} satisfies this.