Top answers

Maths
GCSE

Work out the value of 125 to the power of -2/3.

We want to find 125-2/3. To do this, we will need to use lots of power rules that we have learnt.

Firstly, when we put a power to another power, we multiply the two powers. For...

JR
Answered by Joe R. Maths tutor
36040 Views

How do you calculate the area of a circle?

The equation is 2πr.  That is 2 x pi x the radius (not the diameter!)

NO
Answered by Nick O. Maths tutor
3107 Views

The area of a square is 49cm^2. The perimeter of the square is equal to the circumference of a circle. Work out the radius of the circle. Give your answer to 1 decimal place.

Area of a square (As) = Side length (L)2

L = square root As

L = square root 49

L = 7 cm

Perimeter (P) = 4L

WD
Answered by William D. Maths tutor
15161 Views

Find the roots of the quadratic equation, x^2 - 8x + 24 = 0, by completing the square.

Step 1:

The fisrt step is to use the following formula when asked to complete the square,

( x + (b/2) )2 - (b/2)2 + c = 0

Step ...

PK
Answered by Pantelis K. Maths tutor
7007 Views

Suppose you are given a rectangle where the length is equal to 2x+4 and its width is equal to 3x-2. Assuming that the perimeter is equal to 54 cm, what's the value of x?

Step 1:

For a rectangle, we know that opposite sides are equal

Hence we use this information to draw a rectangle and lab...

PK
Answered by Pantelis K. Maths tutor
4451 Views

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