a) If log x = (0.2993)(74.29), what is x? (give the answer to the correct number of significant figures)

Please don't provide handwritten solution....

Carry out the following operations and express the answers with the appropriate number of significant figures. (a) 14.3505 + 2.65 (b) 952.7 - 140.7389  (e) 13.29 × 104210.25012 (d) 0.0588/0.677

I think I did a calculation wrong but I am having trouble understanding significant figures. In this problem, I am calculation the density of water from my previous calculations mass= 7.359g and volume=7.8mL. So I then divided 7.359g by 7.8mL to find density and got (.9434615385) on my calculator which I then turned into (.94) because I believe there should be 2 significant figures. Is (.94) correct or should 1.4 be the final answer?

Please don't providehandwrittin solution...

(282.7×105)−(1.100×103)]×2.8990 Express your answer to the appropriate number of significant digits.

Perform the following mathematical operations, and express the result to the correct number of significant figures.

Write numbers using scientific notation. (a) Write the following numbers in scientific notation using E-notation. Example: Enter 1.20E-4 for 1.20x10-4 Write each number to two decimal places with one non-zero digit before the decimal point. Example: Use 1.20E-4 NOT 0.120E-3 or 12.0E-5 (i) 0.0661 (ii) 3410 (b) Write the following numbers in standard notation. Do not include a decimal point for numbers greater than 1. Include a zero before the decimal point for numbers less than 1. (i) 3.13×104 31300 (ii) 1.13x10-4 31300 Check & Submit Answer Show Approach

3. Use exponential notation to express the number 385,500 to (a) one significant figure. (b) two significant figures. (c) three significant figures. (d) five significant figures.

Indicate how many significant figures there are in (a) 0.305 0 (b) 0.003 050 (c) 1.003 X 104