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- 1-85 In Japan, high-speed “bullet trains” move with an average speed of 220. km./h. If Dallas and Los Angeles were connected by such a train, how long would it take to travel nonstop between these cities (a distance of 1490. miles)?Consider the following mathematical expression: (2.4 × 10³) (2.24 × (2.54)³) 0.7217 x = X The answer X should be expressed as significant figures.Perform the following calculation to the correct number of significant figures: ( (5.01 × 10^5) ÷ (7.8 × 10^2)
- x (-5.1 × 10² = 1)·0 - 3 m S 7 cm(4.123 × 0.12) + 24.2 why is the answer 25 and not 24.7? The last rule to be used is the addition, which meant I would round to 1 decimal place in this case. Yet the final answer is rounded to two significant figures (multiplication rule), why is this?( 5.31 × 10 8 ) + ( 6.53 × 10 7 )
- 1.00 x 10 8 + 9.45 x 10 4.03 x 10 + 1.00 x 10 8 3.17 x 104 9.68 x 106 (00 1.00 × 10-8) (9.45 × 10-4Evaluate to the appropriate number of significant figures and express in scientific notation:(4.791 x 109 - 3.291 x 1012) / (7.120 x 10-5 + 7.120 x 10-8 + 7.120 x 10-11)Give the answers with the correct number of significant figures: a) 41.84 x 100.62 x (15.227 - 15.134) b) [ (1.057 x 104) x (1.228 x 10-3)] / [2.65 + (4.3 x 10-2) ] Please explain step by step.