Enter an equation that can be used to solve this problem, where x represents the number of hours that the first plane had been traveling.
two planes left the same airport traveling in opposite directions. the first plane left the airport at 2 p. m. traveling at an average rate of 500 mph. the second plane left the airport at 4 p. m. traveling at an average rate of 550 mph. when will the planes be 3100 miles apart?
enter the amount hours, after the first plane left, when the planes will be 3100 miles apart.
equation:
hours:

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

One of the solutions to x2 - 2x – 15 = 0 is x = -3. what is the other solution? ox=-5 ox= -1 0 x=1 x = 5