15. A passenger train left San Diego and went to San Francisco and back. The trip to San Francisco took three hours, but the return trip took four hours. If the train averaged six kilometers per hour
on the trip back to San Diego, find the average speed of the train during the outbound trip.

the answer is thin because within context, the stanza concludes the and frail tone the people have toward each other, and the fact that it would be thin, makes the most sense compared to "pliable" or "not hard or firm to the touch". hope this , good luck.

step-by-step explanation:

can i have brainliest

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

b). 4320 have a nice day