abby894927
15.10.2019 •
Mathematics
how many real roots does xˆ4-xˆ3-9xˆ2+7x+14=0 have?
2
4
1
3
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Ответ:
Speed of first plane is 350 miles per hour
Speed of second plane is 100 miles per hour
Step-by-step explanation:
Let the speed of the second plane be X
Then the speed of the first plane will be 3.5 X
Distance travelled by first plane is 9.5 *X
Distance travelled by second plane is 9.5 * 3.5 X
Difference of distance between the two plane is
Speed of first plane is 3.5 *100 = 350 miles per hour
Speed of second plane is 100 miles per hour