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Which number is equal to 7(3.5 x 10^4) written in scientific notation? 24.5 x 70^4 2.45 x 10^5 24.5 x 10^4 1.05 x 10^5

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24.5 x 10^4 7*3.5 = 24.5
A number written is scientific notation consists of two parts. The first part is a number x, such that 0 <= x < 10. The second part is a power of ten which multiplies the first part. Notice that the first part is between 0 and 10. When you multiply the numbers 7(3.5 x 10^4) = 7 x 3.5 x 10^4 = 24.5 x 10^4, but this is not scientific notation because 24.5 is not between 0 and 10. In order to make it scientific notation, you need to divide 24.5 by ten, to get 2.45. In order not to change the number, the power of ten has to be multiplied by 10 24.5 x 10^4 = 2.45 x 10 x 10^4 = 2.45 x (10 x 10^4) = 2.45 x 10^5

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i get it! thanks @mathstudent55 ur the best!!!!

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