how many significant figures are in each of these problems -2000+20.5 -106.2+54.07

Question

how many significant figures are in each of these problems
-2000+20.5
-106.2+54.07

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Diễm Thu 3 years 2021-09-05T13:42:39+00:00 1 Answers 7 views 0

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  1. danthu
    0
    2021-09-05T13:43:41+00:00
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    Answer:

    • 3 significant figures

    Step-by-step explanation:

    Problems given:

    • – 2000 + 20.5 = – 1979.5 ≈ -1980.0 ⇒ 3 significant figures
    • – 106.2 + 54.07 = – 52.13 ≈ -52.1 ⇒ 3 significant figures

    Zeros at the end are not counted as significant figures

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