Answer:
Factor and set each factor equal to zero. Y=x2+5x−8
Step-by-step explanation:
Anna average speed in km/h is 7.5 km per hour
<h3>Average speed</h3>
Average speed is the ratio of total distance covered to total time taken. It is given by:
Average speed = Total distance / total time
Given the distance upstream is 16 km at a rate of 6 km/h, hence:
The distance downstream is 16 km at a rate of 10 km/h, hence:
Total distance = 16 km + 16 km = 32 km
Total time = 2.67 + 1.6 = 4.27 hours
Average speed = 32 / 4.27 = 7.5 km per hour
Anna average speed in km/h is 7.5 km per hour
Find out mote on average speed at: brainly.com/question/4931057
The length of the x in the diagram is 12.
We can set up the following equation using the similar triangles that are created when you have an altitude in a right triangle.
If you subtract 16 from 25, you get 9, which is the length of the segment next to the 16.
x^2 = 16(9)
x^2 = 144
x = 12
I think the answer is a gain of 12 yards
Hope it works!
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