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How do I solve simultaneous equations using the substitution method?

2y + x = 8 (equation 1) and 1 + y = 2x (equation 2)Step 1: make y subject of equation 2: y = 2x - 1 Step 2: sub this value of y into equation 1: 2(2x - 1) + x = 8 Step 3: solve the above ...

LH
Answered by Lulu H. Maths tutor
3416 Views

Find the roots of the following equation 2x^2-11x+14=0

First start by copying down the question and making sure that you have copied all of the correct numbers. We then identify that it is a quadratic equation due to there being an x raised to a power 2 term....

JD
Answered by Jack D. Maths tutor
3247 Views

Describe the necessity for a reflex action to occur when, for example, touching a hot surface (2)

A reflex action is much faster than a normal, conscious movement, which enables a person to remove themselves from a dangerous stimulus much faster, to reduce the damage which would be caused if a reflex ...

LD
Answered by Leo D. Biology tutor
2432 Views

Simplify \sqrt{98} - \sqrt{32} giving your answer in the form k*sqrt{2} where k is an integer

Let's begin with the basics, before we begin we should be able to answer what is a surd? and What rules do we need?\begin{equation}...\end{equation}Answer: 3*sqrt{2}

CV
Answered by Corey V. Maths tutor
2898 Views

The most interesting characters in The Gothic are the villains. Discuss.

The concept of the villain within the Gothic genre is so fascinating because it is such a complex concept. Frequently in Carter's The Bloody Chamber and Other Stories (1979) there is a sense of a...

GS
8741 Views

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