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x^2+10x+6=0 Find x

Quadratic formula. x=(b+-SQRT(b^2-4ac))/2a substitute. x=(10+-SQRT(100-416))/21 simplify. x=5+2SQRT(19)/2ORx=5-2SQRT(19)/2

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 ...

Answered by Abul Qasim A. • Maths tutor

3023 Views

What is a monoclonal antibody?

An antibody is a specific protein produced in response to an antigen.A monoclonal antibody is an antibody that has been produced from one specific type of white blood cell. Every antibody...

Answered by Danial B. • Biology tutor

2338 Views

James is 7 years older than Kate. Sam is twice as old as James. The sum of their ages is 77. Find the ratio of Kate's age to James' age to Sam's age.

Kate's age = xJames age = x + 7 Sam's age = 2x + 14sum of age = 77 Therefore x + x+7 + 2x+14 = 774x + 21 = 77 4x = 56 x= 14 ratio = 14:21:42

Answered by Danial B. • Maths tutor

4750 Views

Evaluate the extent to which general elections in the UK are lost by the government rather than won by the opposition (30) (Edexcel Sample Assessment Materials)

This question encourages you to think about the two sides of the argument as to why changes of government happen - i.e. is it the government's fault, or the skill of the opposition. You must come to a jud...

Answered by Joanne R. • Politics tutor

19957 Views