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Week #26 Reach for the Stars

Week #26 Reach for the Stars. 8 th grade Math. Reach for the Stars Monday.

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Week #26 Reach for the Stars

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  1. Week #26 Reach for the Stars 8th grade Math

  2. Reach for the StarsMonday The students in Mr. Buchmeyer’s science class are ordering the materials they will need for a science experiment. Each student will need a bag of plant seeds that costs $1.00 and a 6-plant tray that costs $2.50. If x represents the number of students in Mr. Buchmeyer’s science class, which equation can be used to find y, the amount in dollars spent by Mr. Buchmeyer’s students? A. y = 2.5x + 1 B. y = 3.5x C. y = x + 3.5 D. y = x + 2.5

  3. Reach for the StarsMonday The table below shows how many pounds of certain types of tropical fruit were sold at a store during a 3-month period. If the store uses only these data to order fruit, which conclusion is most reasonable? A The store should order half as many pounds of guava as papaya. B The store should order half as many pounds of guava as pineapple. C The store should order half as many pounds of mango as papaya. D The store should order half as many pounds of mango as pineapple.

  4. Reach for the StarsTuesday A set of parentheses is missing from the expression below. 15 - 5 + 7 · 2 + 4 Which of the following expressions has the parentheses in the correct place for the expression to equal 52? A. 15 − (5 + 7 · 2) + 4 B. (15 − 5 + 7) · 2 + 4 C. 15 − (5 + 7 · 2 + 4) D. 15 − 5 + 7 · (2 + 4)

  5. Reach for the StarsTuesday The length of each leg of an isosceles triangle is 12 inches. The perimeter of the triangle is 30 inches. Which method can be used to find the length of the base? • Find the sum of the two legs and divide by 30 • Find the sum of the two legs and subtract from 30 • Subtract 12 from 30 and divide by 2 • Add 12 and 30 and divide by 2

  6. Reach for the StarsWednesday Mrs. Micelli placed a picture of an equilateral triangle on an overhead projector in her math class. The overhead projector dilated the triangle’s image on the screen by a scale factor of 3.5. If the length of each side of the actual triangle is 5 centimeters, what is the length of each side of the dilated triangle on the screen? • 175 cm • 17.5 cm • 8.5 cm • 3 cm

  7. Reach for the StarsWednesday The graph shows vertices P and Q of ΔPQR. Which of the following ordered pairs best represents a location of vertex R that will make ΔPQR an isosceles triangle? A (0, 2) B (2, −5) C (1, 2) D (−2, −6)

  8. Reach for the StarsThursday A ladder that is 13 feet long leans against a building. The bottom of the ladder is 5 feet away from the base of the building. How far up the side of the building does the ladder reach? • 18 ft • 16 ft • 12 ft • 8 ft

  9. Reach for the StarsThursday Mrs. Cook asked Chasity to solve the equation shown below. 5x + 6 = 11 Which of the following could Chasity choose as a reasonable first step in solving this equation? A 5x + 6 + 6 = 11 B 5x + 6 = 6 C 5x + 6 = 11 + 6 D 5x + 6 − 6 = 11 − 6

  10. Reach for the StarsFriday To cover his bulletin board, Mr. Adams needs 1½ yards of fabric and 6¼ yards of trim. If the fabric costs $2.79 per yard and the trim costs $1.19 per yard, which equation can be used to find c, the total cost of covering the bulletin board? A. c = (2.79 + 1.5) + (1.19 + 6.25) B. c = (2.79 · 1.5) + (1.19 · 6.25) C. c = (2.79 + 1.5) − (1.19 + 6.25) D. c = (2.79 · 1.5) − (1.19 · 6.25)

  11. Reach for the StarsFriday The Johnsons are thinking of building a bridge across their pond from point X to point Z, as shown in the figure below. Which is closest to the distance from point X to point Z? A 100 yards B 50 yards C 25 yards D 10 yards

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