Calculate (0.82 + 0.042) * (4.49 *10³), keeping only significant figures. A) 3870.8 B) 3870 C) 3879 D) 3900

Question

Quizplus · Accepted Answer

The calculation involves significant figures. The sum (0.82 + 0.042) is 0.862, which has three significant figures. The multiplication (4.49 x 10^3) has three significant figures. The product is 0.862 x 4.49 x 10^3 = 3870.38, which should be rounded to three significant figures, resulting in 3900.