48,000
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To find the nth power of number x, you multiply n x's together. In this case we want the 4th power of 10, so we take 4 10s (10, 10, 10, 10) and multiply them together: 10x10x10x10=10,000 So 10 to the 4th power is 10,000.
4-3 x 4-5 = 1.5265625 × 10-5
4 8/10, or 48/10.4 8/10, or 48/10.4 8/10, or 48/10.4 8/10, or 48/10.
To evaluate the expression (4x10^4)(2x10^5), you first multiply the numbers 4 and 2 to get 8. Then, you multiply the powers of 10 by adding the exponents, which gives you 10^(4+5) = 10^9. Therefore, the final answer is 8x10^9.