The distance between Station A and Station B is 4.8 miles. The distance between Station B and Station C is 16 miles. A train takes 4 minutes to travel from Station A to Station B and another 12 minutes to travel from Station B to Station C. Find the average speed of the train for the whole journey from Station A to Station C in miles per hour. Please explain

78 miles per hour

Step-by-step explanation:

Formula for speed is Distance divided by Time. (D/T)

The distance between Station A and Station C can be found be adding the distance from A to B and B to C. (20.8 Miles)

Same concept would go for the time.

Time to get from A to B added with B to C. (16 Minutes)

However, the time is in minutes and the question calls for hours. Divide 16 by 60, you get around 0.27.

20.8 divided by 0.27 would be around 77.9, or 78 miles per hour.

Hope this helps :)

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is