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Math help

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Which number is equal to 7(3.5 x 10to the 4th) written in scientific notation?
A.24.5 x 70to the 4th
B.2.45 x 10 to the 5th
C.24.5 x 10 to the 4th
D.1.05 x 10 to the 5th

I think it is B...?

  • Math help -

    7*3.5 = 24.5, so you have 24.5*10^4

    but scientific notaion requires a value less than 10, so you have to raise the power by one. (B)

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    Describe 2 polygons by the number of vertices and sides each has

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