Top answers

calculate the volume and surface area of a beach ball with a 30cm diameter.

surface area 1.13m^2volume 0.11 m^3
OM
Answered by Olivia M. • Maths tutor
3023 Views

find the integral of 1/x

ln(x)+c
GA
Answered by George A. • Maths tutor
2821 Views

A right-angled triangle has an adjacent of (x + 1) and (x - 1). (a) Find the length of the hypotenuse in terms of x. (b) Explain why the triangle can't be an isoceles triangle.

(a). Using Pythagoras' Theorem, (x + 1) 2 + (x - 1) 2 = x 2 + 2. (b). (x + 1) cannot = (x - 1) for any x.
DA
Answered by David A. • Maths tutor
3144 Views

You and your brother have your pocket money split in the ratio 2:7. If your brother receives £42, how much do you receive?

Ratios are best thought of as how to split up one total amount into different portions. People often like to think about a cake; in this particular scenario we are splitting a cake with 9 slices (7 + 2) into...
SR
Answered by Sam R. • Maths tutor
4474 Views

How do I graph linear inequalities?

You can use a simple three step method: Rearrange the inequality to the format 'y = ....', with the relevant sign in the middle (≥, ≤, < or >).Plot the line 'y = ....' making it a solid line if the ine...
MP
Answered by Matt P. • Maths tutor
3370 Views