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Notice in this row, we’re multiplying by 3 each time to get the next number.

81 * 3 = 243. Notice in this row, we’re multiplying by 3 each time to get the next number. Bottom 25%. Top 25%. Median. 3(2x-5) = 4(x+3). 6x-15 = 4x+12. -4x -4x. 2x-15 = 12. +15 +15. 2x = 27. 540 - 270 270.

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Notice in this row, we’re multiplying by 3 each time to get the next number.

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  1. 81 * 3 = 243 Notice in this row, we’re multiplying by 3 each time to get the next number.

  2. Bottom 25% Top 25% Median

  3. 3(2x-5) = 4(x+3) 6x-15 = 4x+12 -4x -4x 2x-15 = 12 +15 +15 2x = 27

  4. 540- 270 270 These three right angles make up 270 degrees, so we’ll subtract that from our total. The angles in a triangle add up to 180 degrees, so the entire shape would have 540 degrees. The figure can can be divided into 3 non-overlapping triangles. 180 * 3 = 540 Since these two angles add up to 270, the missing angle would be 150.

  5. Poll #2 shows the most favorable result for Candidate A. 9/20 = 45% 52% 55,000/130,000 = 42.3%

  6. Since the MEDIAN is the MIDDLE number, we can cross off the highest and lowest numbers until we reach it. POSITIVEPOSITIVEPOSITIVEPOSITIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVENEGATIVE (Remember, when we say “MIDDLE” number, the numbers have been arranged in order from greatest to least!)

  7. The fastest rate of travel occurs when the slope of the graph is the steepest.

  8. When expressing a number in scientific notation, the first value must be between 1 and 10.

  9. Choice C is the only one that works all 6 times. For example… 15 = (4)2 - 1 15 = 16 - 1 15 = 15

  10. E” F” D” E E’ F F’ D D’ D’ = (1,-1) E’ = (4, 3) F’ = (5, 1) D’’ = (-1, 6) E’’ = (2, 10) F’’ = (3, 8) The same result could be obtained through a single translation of DDEF by moving each vertex one unit right and five units up.

  11. These can easily be made into fractions by writing them with a “1” in the denominator. This already is a fraction. “Irrational” means CANNOT be written as a fraction.

  12. This means “less than or equal to $300”. Since the skates, lessons, and practice time are all COSTS, they’ll have to be ADDED together.

  13. Prisms have two faces which must be parallel to each other. Our shape has no parallel faces. A cone contains a circular face. A cube doesn’t contain a triangular face, but our shape has one.

  14. They want us to solve for b. E = 15m + 5b E = 15(6) + 5b 200 = 15(6) + 5b 200 = 90 + 5b 110 = 5b 22 = b

  15. Consider a state with a small area, like Rhode Island. Florida contains about thirty times more land than Rhode Island, but Florida may only have fifteen times as many people as Rhode Island. In this example, Rhode Island has a smaller overall population. It’s population density, however, is about twice that of Florida!

  16. Obviously, you’re not going to survey the faculty to pick dance music!!! The captains of sports teams represent students who are heavily involved in athletics. This may not paint an accurate picture of what the rest of the school listens to. Also, team captains tend to be upperclassmen, so freshmen and sophomores would not be represented equally. If you survey nothing but freshmen, you’re not getting a true cross-section of the school. You don’t really have any idea of what the upperclassmen might want to hear. By randomly choosing two people from each homeroom, every student in the school has the same opportunity to be selected for the survey, regardless of who they are or what they do.

  17. 8” 2” The cross-section is a rectangle. If the radius is 4 inches… Then the diameter is 8 inches… And the height is 2 inches…

  18. 3x + 2y = 19 4x - 2y = 2 3x + 2y = 19 2 ( ) 2x - 1y = 1 Multiplying the second equation by 2 will cause the “y” terms to cancel each other out. 7x + 2y = 21 x = 3 To find y, plug the x back into one of the original equations… 2(3) - y = 1 6 - y = 1 y = 5

  19. There used to be 100 pieces of candy. Now, there are only 95 left. There used to be 15 blue pieces. Now there are only 13 blues. Candy bag (100 pieces) 95 The probability of pulling out a blue candy now is 13/95 (or .13684)

  20. Mr. Jeff LuceBBHHS Mathematics Dept. This presentation brought to you by Good luck & have a nice day!!!

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