Two planes fly toward each other. They are 3500 kilometers apart. They pass each other after 7.5 hours. If their speeds differ by 65 kilometers per hour, what are their speeds?

Given:

Two planes fly toward each other. They are 3500 kilometers apart.

They pass  each other after 7.5 hours.

Their speeds differ by 65 kilometers per hour.

To find:

Their speed.

Solution:

Let speed of one plane be x km/h.

So, speed of second plane is x+65 km/h.

Relative speed = x+(x+65) km/h

We know that,

Multiply both sides by 7.5.

Divide both sides by 15.

Speed of first plane = 200.83 km/h.

Speed of second place = 200.83+65 = 265.83 km/h

Therefore, their speeds are 200.83 km/h and respectively.

the answer is c

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step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

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5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.