Answer:
30
Step-by-step explanation:
15x2
<u> </u><u>9 hours</u><u> long after the second runner started will the second runner overtake</u><u> the first runner.</u>
What does it mean to do speed?
- Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
- Put another way, speed is a scalar value, while velocity is a vector.
Runner I = 6 mph
Runner II = 7 mph
Difference in time= 90 minutes
Train A will have covered 9 miles before Runner II starts
catch up distance= 9 miles
catch up speed = 7-6 mph
catch up speed = 1 mph
Catchup time = catchup distance/catch up speed
catch up time= 9/1
catch up time= 9 hours
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Answer: Angle X = 30
Step-by-step explanation: First and foremost, we should recognize that an isosceles triangle has two sides equal and the two angles subtended by the two equal sides are also equal in measurement.
This means. In the diagram on the left, line DE = line DF and that is 10cm.
The similar angles are the ones subtended by the lines identified as being equal, that is
Angle E = angle F and that is 75. If both angles measure a combined total of 150 the third angle can be derived simply as
180 - (75+ 75)
{Sum of angles in a triangle = 180}
180 - (150)
= 30
Therefore angle D = 30.
However having been given in the question that both triangles are similar and are isosceles, then
Angle D = Angle X and that is 30
12-y=9
3x-y=21
4y-10=2
1/4xy=6