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A circle has equation x^2+y^2+6x+10y-7=0. Find the equation of the tangent line through the point on the circle (-8,-1).

The circle can be written (x+3)²+(y+5)^2 = 41 and so has center (-3,-5).
The gradient through the center and the point (-8,-1) is;m = (-5+1)/(-3+8) = -4/5.
The tangent line is perpend...

Answered by Rhianna L. • Maths tutor

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Explain Kant's categorical imperative

Kant's categorical imperative is stated as "Act only according to that maxim

Answered by Harout K. • Philosophy and Ethics tutor

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Explain the difference between current and voltage

Current is defined as the amount of electrons that flow through a wire per secondVoltage is defined as the amount of energy that each electron carries as it passes throug...

Answered by Harout K. • Physics tutor

2381 Views

Why are monopolies inefficient?

A monopoly is occurs when there is a single firm is the only supplier of a good or service in a given economy. Thus, it is able to choose the price that it wants (price maker) and a given quantity that wi...

Answered by Harout K. • Economics tutor

2114 Views

How would I go about learning my set text thoroughly and accurately?

You need to find the best possible method for you. 1. Make sure you read aloud your text, and record yourself, then listen to the text while you are walking, running, before bed, ect. 2. You need to be ab...

Answered by Sophie D. • Latin tutor

1730 Views