Top answers

Maths
GCSE

N = 2a + b. a is a 2 digit square number, b is a 2 digit cube number. What is the smallest possible value of N?

First, the smallest values of a and b must be found and then substituted into the equation for N.

To find a.

A square number is a number that is the result of multiplying an...

OG
Answered by Oliver G. • Maths tutor
3278 Views

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
35433 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
3022 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
15028 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
6872 Views

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