Question

question 29 not yet answered marked out of 1.00 7 flag question match each equation with its answer in scientific notation. answers are rounded to the correct number of significant figures. 20 + 2.1 = 3400 / 0.25 = 30,000 x 0.034 540.34 - 14.0 = 6.3 x 2.903 = choose... 1 x 10^3 1.8 x 10^1 2.2 x 10^1 1.4 x 10^4 5.263 x 10^2 choose... question 30 not yet match the term with the correct definition.

Explanation:

Step1: Calculate sum, round sig figs

$20 + 2.1 = 22.1 \approx 22 = 2.2 \times 10^1$

Step2: Calculate division, round sig figs

$3400 / 0.25 = 13600 \approx 14000 = 1.4 \times 10^4$

Step3: Calculate product, round sig figs

$30,000 \times 0.034 = 1020 \approx 1000 = 1.0 \times 10^3$

Step4: Calculate subtraction, round sig figs

$540.34 - 14.0 = 526.34 \approx 526.3 = 5.263 \times 10^2$

Step5: Calculate product, round sig figs

$6.3 \times 2.903 = 18.2889 \approx 18 = 1.8 \times 10^1$

Answer:

$20 + 2.1 = 2.2 \times 10^1$
$3400 / 0.25 = 1.4 \times 10^4$
$30,000 \times 0.034 = 1.0 \times 10^3$
$540.34 - 14.0 = 5.263 \times 10^2$
$6.3 \times 2.903 = 1.8 \times 10^1$