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noname [10]
3 years ago
15

Which of the following is the same as 8.4 × 102 ? a. 840 b. 84 c. 8,400 d. .84

Mathematics
2 answers:
torisob [31]3 years ago
8 0

Answer:  The correct option is (a). 840.

Step-by-step explanation:  We are given to select the number that is equivalent to the following decimal number :

N=8.4\times 10^2.

We know that

10 to the power positive number n means there are n zeroes after the digit 1.

Therefore, for the given decimal number, we get

N=8.4\times 10^2=8.4\times100=84\times10=840.

Thus, the required same number is 840.

Option (a) is CORRECT.

gavmur [86]3 years ago
7 0
Move the decimal 2 places to the right

8.4 becomes 840
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Which of the following lines is perpendicular to the x-axis and contains the point (-11.4, 12.8)
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Step-by-step explanation:

Let us revise the equations of the vertical lines and horizontal lines

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  • The x-coordinates of all points lie on the line are equal
  • The equation of the vertical line basses through point (a , b) is x = a
  • The horizontal line is a line parallel to x-axis
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∵ The line is perpendicular to the x-axis

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∴ The equation of the line is x = a, where a is the x-coordinate

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Learn more:

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