Top answers

How do I factorise x^2 ​- 4?

This is similar to other factorisation problems such as x 2 + 5x - 6. In this problem, you would find prime factors of -6 that add up to 5 (In this case -3, -2). Now, do the exact same with this problem! Thi...
LG
Answered by Lauren G. • Maths tutor
53025 Views

How do I know if a noun is 'der', 'die' or 'das'?

Think of the noun and its gender as a married couple ! You need to learn the gender of a noun at the same time as learning the noun itself. There are also some tricks to knowing whether a noun is 'der', 'die...
FL
Answered by Flora L. • German tutor
4634 Views

What were the peacekeeping powers of the League of Nations in the 1920s?

- moral sanctions economic sanctions military sanctions International Court of Justice disarmament
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Answered by Freya M. • History tutor
3680 Views

Rectangle A has a length of 3y cm and a width of 2x cm. Rectangle B has a length of (y + 4)cm and a width of (x + 6)cm. Rectangle A has a perimeter of 94cm and Rectangle B has a perimeter of 56cm. Solve x and y and calculate the areas of each rectangle.

To calculate the perimeter of a shape, you have to add up the lengths of all of its sides. So:A: 3y + 2x + 3y + 2x = 94 ; B: (y + 4) + (x + 6) + (y + 4) +(x + 6) = 56Simplifying both equations give:4x + 6y =...
RA
Answered by Raghav A. • Maths tutor
10498 Views

What is the mean of the numbers: 1, 7, 25, 9 and 34?

The mean of a group of numbers is found by dividing their sum by how many numbers there are. Mean=(1+7+25+9+34)/5=76/5=15.2
IR
Answered by Isabel R. • Maths tutor
4688 Views