Practice Quiz

IB Mathematics SL Prep - Question List

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21. Use a calculator to find the sine of 46.3°
  1. 0.013
  2. 0.691
  3. 0.723
  4. 1.00
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22. When formulating answers to market-sizing questions, what’s one of the best strategies to keep in mind?
  1. Be sure to use exact numbers at all times.
  2. Go slow and be as methodical as possible.
  3. Estimate and round numbers whenever possible.
  4. Pick odd numbers that aren’t related to each other in any way.
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23. Given a triangle with sides a = 20 feet, b = 40 feet, and c = 56, what is the area in square feet?
  1. 71.67 ft2
  2. 116.00 ft2
  3. 281.68 ft2
  4. None of the above
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24. Shane’s Softball Production Company can produce 12 softballs in an hour. How many softballs can they produce in 14 hours?
  1. 154
  2. 160
  3. 168
  4. 172
  5. 188
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25.

The given numbers are daily groundwater elevation readings from a monitoring well taken during a month experiencing snowmelt and extended rainfall events.

7.6, 7.7, 4.3, 5.9, 5.0, 10.5, 7.7, 9.5, 12.0, 12.6, 6.5, 8.3, 8.2, 13.2, 12.6, 13.6, 14.1, 13.5, 11.5, 12.0, 10.4, 10.8, 13.1, 12.5, 10.4, 13.0, 14.1, 15.1

What is the sample variance of these groundwater elevation readings?

  1. 8.764
  2. 9.089
  3. 10.56
  4. None of the above
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