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A price is decreased by 27% The new price is £1138.80 Work out the original price.

This can be solved by making an equation for the old price. Make the old price be equal to x. To find the new price the old price must be multiplied by the percentage of the old price that remains. To find t...
OG
Answered by Oliver G. • Maths tutor
4883 Views

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 and number by itself . Eg 2 squared ...
OG
Answered by Oliver G. • Maths tutor
3849 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 example, (2 3 ) 4 (2 to the ...
JR
Answered by Joe R. • Maths tutor
38045 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
3563 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 (A s ) = Side length (L) 2 L = square root A s L = square root 49 L = 7 cm Perimeter (P) = 4L P = 4 x 7 P = 28 cm P = Circumference (C) C = 28 cm C = 2pi x Radius (r) r = C / (2pi) r = 28 / ...
WD
Answered by William D. • Maths tutor
15824 Views