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7th Grade Math

7th Grade Math Question of the Day

Practice 7th Grade Math with the production-style question-of-the-day selection for this public URL.

Question 1

A submarine changes its depth at -6 meters per minute (downward is negative). How many minutes does it take to change by -42 meters?

  1. -7
  2. 36
  3. 6
  4. 7
Explanation: Find ttt so that (−6)×t=−42(-6) \times t = -42(−6)×t=−42. Divide: (−42)÷(−6)=7(-42) \div (-6) = 7(−42)÷(−6)=7. Dividing two negatives gives a positive, so it takes 7 minutes.