55 705
Assignments Done
97,2%
Successfully Done
In November 2017
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Algebra Question for Khor Soon Chuan

Question #21708
The heights (in metres) of two men satisfy the quadratic equation 40x^2 - 138x + 119 =0 Without solving the equation, find the average height of these two men.
Expert's answer
Let x1, x2 - roots of the equation (and it is heights of two men);we can use Vieta's theorem to find x1+x2.
To do this we can rewrite equation as
x^2-(138/40)*x+119/40=0
Now, from Vieta's theorem x1+x2=-(-138/40)=138/40 averageheight=(x1+x2)/2=138/80=69/40=1.725 metres

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question