Question

Which expression does this power represent?

109


10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10

9 × 9 × 9 × 9 × 9 × 9 × 9 × 9 × 9 × 9

10 × 9 × 10 × 9 × 10 × 9 × 10 × 9 × 10 × 9 × 10 × 9 × 10 × 9 × 10 × 9 × 10 × 9

10 × 9

Answer 1

a 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10

Explanation:

Answer 2

9514 1404 393

Answer:

(a) 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10

Explanation:

You may recall that we use a multiplier to signify repeated addition:

x + x + x = 3x

In a similar way, we use an exponent to signify repeated multiplication:

10 × 10 × 10 = 10³

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The exponent 9 in 10⁹ means the factor 10 appears 9 times in the product:

10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 = 10⁹