the lab has a few materials: baking soda, vinegar, measuring cup, plastic syllable bag, a tablespoon, and a scale which one of these materia

Question

the lab has a few materials: baking soda, vinegar, measuring cup, plastic syllable bag, a tablespoon, and a scale which one of these materials would be most useful in determining the mass for before and after the reaction?​

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Nho 3 years 2021-09-03T05:11:36+00:00 2 Answers 2 views 0

Answers ( )

    0
    2021-09-03T05:13:31+00:00

    Answer:

    l = 14

    Step-by-step explanation:

    The perimeter of a rectangle is

    P =2(l+w)

    The width is x-6

    w = x-6

    The length is 8 units longer than the width

    l = w+8

    l = x-6+8

    l = x+2

    We can substitute this into the equation for Perimeter, which is given as 40

    40 = 2(x+2 + x-6)

    Combine like terms

    40 =2 (2x-4)

    Divide by 2

    40/2 = 2/2 (2x-4)

    20 = 2x-4

    Add 4 to each side

    20+4 =2x-4+4

    24 = 2x

    Divide by 2

    24/2 =2x/2

    12=x

    We want to know the length

    l = x+2

    l =12+2

    l = 14

    Explanation:

    0
    2021-09-03T05:13:33+00:00

    Answer:

    the plastic syllable

    Explanation:

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )