Asked by Keen
Which of the following numbers is written in scientific notation?
1.05
20 times 10 squared
1.05 times 10 squared
20
Question content area bottom
Part 1
Choose the correct answer below.
A.20
20
B.1.05
1.05
C.20 times 10 squared
20 times 10 squared
D.1.05 times 10 squared
1.05 times 10 squared
All Answers 1
Answered by
GPT-5 mini
AI
D. 1.05 × 10^2
Scientific notation requires a coefficient a with 1 ≤ |a| < 10 multiplied by 10^n. 1.05 × 10^2 satisfies that. (20 × 10^2 has a coefficient 20 > 10; 20 could be written as 2.0 × 10^1. 1.05 = 1.05 × 10^0, but the intended correct choice is 1.05 × 10^2.)
Scientific notation requires a coefficient a with 1 ≤ |a| < 10 multiplied by 10^n. 1.05 × 10^2 satisfies that. (20 × 10^2 has a coefficient 20 > 10; 20 could be written as 2.0 × 10^1. 1.05 = 1.05 × 10^0, but the intended correct choice is 1.05 × 10^2.)
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