The distance from earth to the moon is 384,400 kilometers. what is this distance expressed in scientific notation?

3.844e5 kilometers
3.844 × 105 kilometers
3.844e-5 kilometers
3.844e-6 kilometers
3.844 × 106 kilometers
3.844e6 kilometers
3.844 × 10-6 kilometers
3.844 × 10-5 kilometers

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building