Add 345 000 to 1.9 million. what is the answer expressed as scientific notation?

Round to the nearest ten thousandth.i dont get this

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the

12 3 4 5 6 7 8 9 10 time remaining 59: 02 charlie is evaluating the product of 0.09 and 0.05. he multiplies, and before placing the decimal, arrives at an answer of 45. after considering the decimal placement, what is charlie's final answer? 0.0045 0.045 0.45 0.4545 mark this and return