Top answers

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
3131 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
4454 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
3362 Views

Work out the number of green pens in the box. (rest of Q below)

There are only green pens and blue pens in a box. There are three more blue pens than green pens in the box. There are more than 12 pens in the box. Simon is going to take at random two pens from the box. Th...
EH
Answered by Elinor H. • Maths tutor
5394 Views

Calculate the mean value of 34,35,36,32,39.

Mean is the average value, to calculate it you have to add up all the values and divide it by the number of values.So in this case, adding up: 34 + 35 + 36 + 32 + 39 = 176Then, divide the sum by number of va...
HT
Answered by Haushala T. • Maths tutor
4675 Views