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12 questions math Grades 7-8

The question sheet

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  1. According to answer 139, the two times given are:

    • 5 seconds, 8 seconds
    • 8 seconds, 12 seconds
    • 5 seconds, 10 seconds
    • 2 seconds, 4 seconds
    Reveal answer

    Answer: 5 seconds, 8 seconds

    Source evidence

    PDF page 1333: 139. 5 seconds, 8 seconds

  2. In answer 145, the numbers described are two consecutive:

    • prime numbers
    • whole numbers
    • even numbers
    • odd numbers
    Reveal answer

    Answer: even numbers

    Source evidence

    PDF page 1333: 145. Two consecutive even

  3. According to answer 147, the numbers whose product is 483 are:

    • 15 and 17, and −15 and −17
    • 21 and 23, and −21 and −23
    • 24 and 26, and −26 and −24
    • 17 and 19, and −17 and −19
    Reveal answer

    Answer: 21 and 23, and −21 and −23

    Source evidence

    PDF page 1333: numbers whose product is 624 numbers whose product is 483 are 24 and 26, and −26 and −24 are 21 and 23, and −21 and −23 . .

  4. In answer 143, the numbers whose product is 255 are:

    • 15 and 17, and −15 and −17
    • 13 and 15, and −13 and −15
    • 21 and 23, and −21 and −23
    • 24 and 26, and −26 and −24
    Reveal answer

    Answer: 15 and 17, and −15 and −17

    Source evidence

    PDF page 1333: numbers whose product is 255 are 15 and 17, and −15 and −17 .

  5. According to answer 149, the width of the triangle is:

    • 10 inches
    • 18 inches
    • 5 inches
    • 7 inches
    Reveal answer

    Answer: 5 inches

    Source evidence

    PDF page 1333: 149. The width of the triangle is 5

  6. According to answer 155, the width of the driveway is:

    • 3.4 feet
    • 5 yards
    • 1.7 feet
    • 7.3 yards
    Reveal answer

    Answer: 7.3 yards

    Source evidence

    PDF page 1333: is 1.7 feet and the hypotenuse is the fence is 7.3 yards. 3.4 feet.

  7. According to answer 157, on its way up the rocket reaches 1,200 feet in:

    • 38 seconds
    • 2 seconds
    • 4 seconds
    • 6 seconds
    Reveal answer

    Answer: 2 seconds

    Source evidence

    PDF page 1333: 157. The rocket will reach 1,200

    PDF page 1333: feet on its way up in 2 seconds and on the way down in 38 seconds.

  8. According to answer 95, the two dimensions given are:

    • 5 feet, 8 feet
    • 16 feet, 20 feet
    • 10 feet, 35 feet
    • 16 feet, 25 feet
    Reveal answer

    Answer: 16 feet, 20 feet

    Source evidence

    PDF page 1333: 95. 16 feet, 20 feet

  9. According to answer 203, in 5.3 sec the arrow reaches a maximum height of:

    • 486 ft
    • 1,200 ft
    • 196 ft
    • 676 ft
    Reveal answer

    Answer: 486 ft

    Source evidence

    PDF page 1335: 203. In 5.3 sec the arrow will

    PDF page 1335: when x = 0 . reach maximum height of 486 ft.

  10. According to answer 199, the minimum value is:

    • 16
    • −7
    • 6
    • −1
    Reveal answer

    Answer: 6

    Source evidence

    PDF page 1335: 199. The minimum value is 6

  11. According to answer 201, the maximum value is:

    • 16
    • 486
    • 6
    • 32
    Reveal answer

    Answer: 16

    Source evidence

    PDF page 1335: 201. The maximum value is 16

  12. According to answer 285, the numbers whose product is 323 are:

    • 24 and 26, and −26 and −24
    • 17 and 19, and −17 and −19
    • 15 and 17, and −15 and −17
    • 21 and 23, and −21 and −23
    Reveal answer

    Answer: 17 and 19, and −17 and −19

    Source evidence

    PDF page 1336: 285. a factor b Quadratic numbers whose product is 323 Formula c square root are 17 and 19, and −17 and −19.

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