Top answers

Work out the cube root of (64x1000).

We are asked to calculate (64x1000) 1/3 . We can use the laws of indices to write that expression as 64 1/3 x1000 1/3 , which is easier to evaluate. To work out 64 1/3 , we either spot the answer as 4 or tak...
MP
Answered by Martin P. • Maths tutor
7205 Views

Use the quadratic formula to find the solutions to x^2+2x-35=0

x=5 and x=7
GN
Answered by Georgia N. • Maths tutor
6739 Views

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

The equation for the area of a triangle is 1/2 x base x height So, first we need to know the length of the base and the height of the triangle. We know that the perimeter of the triangle is 72cm, and the rat...
AB
Answered by Alison B. • Maths tutor
4773 Views

Expand (x+3)(x+2)

(x+3) (x+2)=F=x x= x^2O=x 2=2xI=3 x=3xL= 3*2=6=x^2 + 2x + 3x + 6= x^2 + 5x + 6
NS
Answered by Nicola S. • Maths tutor
5234 Views

Solve the simultaneous equation: 3x+2y=8 and 2x+5y=-2

3x+2y=8 (1)2x+5y=-2 (2)So you need to have a common multiple of either x or y in this example I’ll equate the x of both equations so I’ll multiply (1) by 2 and (2) by 3 2( 3x+2y=8). 6x+4y=16 (3).3(2x+5y=-2) ...
RD
Answered by Rabia D. • Maths tutor
5795 Views