Math and Science Week Crossword

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Across
  1. 2. If a couple already has two sons, what is the percent probability that their next child is female?
  2. 3. the two-digit number obtained when 9 times a one-digit number is subtracted from 10 times a two-digit number
  3. 5. the movement of solutes down a concentration gradient
  4. 8. the total length of wire needed to enclose a rectangular field measuring 125 feet by 200 feet
  5. 9. lines y = 2x + 4 and y = 2x + 10 are _____ to each other
  6. 10. a space where sound cannot travel
  7. 12. red blood cells do not have a _____
  8. 13. a vendor places mangoes in water which serves as a ____ solution
  9. 14. one mode of transmission for Covid-19
  10. 15. always present in organic molecules
  11. 16. section of DNA that codes for a certain protein or trait
  12. 18. Complete the sequence: 36, 31, 29, 24, ___
Down
  1. 1. the solid whose volume is given by V=π(r^2)h
  2. 2. lines y = -x + 6 and y = 3x - 2 intersect at (2,__)
  3. 4. the bouncing off of a light ray when it hits a surface
  4. 6. In an experiment testing the effect of sunlight on plant growth, the amount of sunlight is the ______ variable.
  5. 7. x:15=20:25
  6. 8. opposite over hypothenuse
  7. 11. If 60% of a number is 12, what is 165% of the same number?
  8. 16. rise over run
  9. 17. a value of x that satisfies -7x + 6 ≤ -8