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Work out the value of 81^(-1/4) (Non-Calculator)

To answer this question, we have to think about our power rules and use them to slowly simplify this complicated expression:81^-1/4 = ((81)^1/2)^-1/2 (Because ((x)^y

Answered by Reece P. • Maths tutor

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How do you factorise x^2 +5x+6?

So firstly, you need to find two numbers that multiply to make 6 and add to make 5 Make a list of numbers that multiply to make 6 i.e. 16 and 32
So you can either have (x 6)(x 1) OR...

Answered by Jayan P. • Maths tutor

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How to solve Simultaneous Linear Equations, e.g. (4x + 5y = 17) and (3x + 2y = 4)

Explain how linear simultaneous equations with two variables ("unknowns") differ from single linear equations with two variables. Explain that a single linear equations have multiple, and indeed...

Answered by Henry B. • Maths tutor

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A circular table has a diameter 140 cm. Calculate the area of the table in cm^2, leaving your answer as a multiple of pi.

The equation for a circle is pi x radius x radius. So,first we need to find the radius which is half the diameter, 140 divided by 2 equals 70 cm. As the question asks for the answer as a multiple of pi th...

Answered by Fraser S. • Maths tutor

6773 Views

Find the interserction points of: The circle, x^2+(y-1)^2=18 and the line, y=x+1.

To solve this question, we have to use substitution. We substitute the line equation,y=x+1, into the circle equation so that we get, x^2 + (x+1-1)^2=18. This reduces to 2x^2 = 18, then dividing both sides...

Answered by Alex R. • Maths tutor

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