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Differentiate Y = 4X/(X^2+5) and give dy/dx in its simplest form

4(5-X^2)/(X^2+5)^2
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Answered by Mohamed S. • Maths tutor
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A truck travels 110 miles in 2 hours. What is the average speed of the truck?

Speed is equal to the distance divided by the time, so this will be our calculation. In the question, the distance is given in miles and the time in hours, so the speed should be in miles per hour , m/h. Spe...
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Answered by Veer S. • Maths tutor
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Describe what is meant by "cardiac output"

Cardiac output is the volume of blood pumped out of the heart every minute. It is made up of: stroke volume and heart rate.Stroke volume is the volume of blood pumped out with each heart beat.Heart rate is h...
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x^2+10x+6=0 Find x

Quadratic formula. x=(b+-SQRT(b^2-4 a c))/2 a substitute. x=(10+-SQRT(100-4 1 6))/2 1 simplify. x=5+2SQRT(19)/2ORx=5-2SQRT(19)/2
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Answered by Arthur N. • Maths tutor
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Find the angle z in the following triangle.

< RIght angled triangle with sides of length 8mm, 5mm and h. Unknown angle z denoted.Use SOH CAH TOA in trigonometry to label the triangle accordingly, then find that 'tan' is to be used. Finally, use the...
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Answered by Abul Qasim A. • Maths tutor
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