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The size of each interior angle of a regular polygon is 11 times the size of each exterior angle. Work out how many sides the polygon has.

The way to tackle this particular question requires the need for 2 formula equationsThe sum of all the interior angles of a regular polygon can be worked out by subtracting 2 from the number of sides, and mu...
RY
Answered by Rakeb Y. • Maths tutor
16866 Views

Add the brackets to make the sum correct for the following equation: 12-11+2-1= 0

By putting the bracket around (11+2-1) you are able to calculate that this then equals 12. This can the be put into the equation 12-(11+2-1)=0 which is 12-(12)=0. This then means that 12-12=0 giving you the ...
JW
Answered by Jessica W. • Maths tutor
3857 Views

Factorise the following equation fully: 2x^2+12x

Firstly, we need to take a factor of 2x out of the equation. This is because both 2x 2 and 12x can be divided by 2x. This gives us (2x)(x)+(2x)(6). If we then collect the terms 2x, we get 2x(x+6). 2x(x+6) is...
JW
Answered by Jessica W. • Maths tutor
4482 Views

Prove that n is a prime number greater than 5 then n^4 has final digit 1

Last digit of n determines last digit of n^4. All even numbers divide by 2, so are not prime. Any number ending in 5 is a multiple of 5 so is not prime. Primes > 5 end in 1, 3, 7 or 9. If n ends in 1, 1^4...
AP
12446 Views

Solve the inequality 4m +3 > 15

4m +3 >15 -3 from each side 4m >12 divide each side by 4 to get m on its own m>3
AN
Answered by Alice N. • Maths tutor
3393 Views