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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) i...

Answered by Sam R. • Maths tutor

3837 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...

Answered by Matt P. • Maths tutor

2988 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...

Answered by Elinor H. • Maths tutor

5015 Views

If a=4, b=-2.5, c=10, and d=-6, then calculate 1)abc 2) 4(a^2)-2d+b 3)((2d)^2)-4c+(a^2)

4 * (-2.5) * 10 = -1002)4(4²) - 2(-6) + (-2.5) = 73.53)(2(-6))²- 4(10) + (4)² = 120

Answered by Huw M. • Maths tutor

1255 Views

A fair die has six faces numbered 1, 1, 1, 2, 2, and 3. The die is rolled twice and the number showing on the uppermost face is recorded. Find the probability that the sum of the two numbers is at least three.

There are a couple of ways to approach this. A grid showing all the possibilities can be drawn up, which would help to illustrate the solution a little more explicitly. For now, let's talk through the log...

Answered by Anthony S. • Maths tutor

7829 Views