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15x^2 − 4x + x^2 + 9x − x − 6x^2 =

15x^2 − 4x + x^2 + 9x − x − 6x^2 = ?First you can break up the question and sort out the x^2 part of the equation to make it easier: 15x^2 + x^2 − 6x^2 = 10x^2Then you are left with solving the second part o...
JH
Answered by Jonjo H. • Maths tutor
4599 Views

Expand (2x + 5)(9x - 2).

Use the FOIL method:F - FIRST: the first term in either bracket, multiply: 2x(9x) = 18x 2 . O - OUTSIDE: the terms further from the centre of the brackets, multiply: 2x(-2) = -4x. I - INSIDE: the terms close...
AH
Answered by Aaron H. • Maths tutor
4789 Views

Jim weighs 74.2kg, Connie weighs 67.8kg and Jane weighs 69.4kg. What is the range in their weights?

Range is biggest possible difference, so we need to find the largest weight and the smallest weight given to us: Heaviest = 74.2kg (Jim) Lightest = 67.8kg (Connie) To find the difference take away the smalle...
AH
Answered by Aaron H. • Maths tutor
4377 Views

Solve the simultaneous equations: 1) 4x - 2y = 28, 2) 4y - 3x = -36.

Before starting, look whether either equation has common factors. Equation 1 does common factor 2, so divide it by 2 both sides to get 1) 2x - y = 14. Rearrange 1) to get one unknown in terms of the other. I...
AH
Answered by Aaron H. • Maths tutor
4885 Views

Tommy, Anna and Jacob all have 40 sweets. they decide to split the sweets between each other in the ratio 1:4:5. Calculate how many sweets each get, rounding down your answer where necessary.

1+4+5=10. 40/10 = 4. 1 x 4= 4 = 4 sweets for Tommy. 4 x 4 = 16 sweets for Anna. 5 x 4 = 20 sweets for Jacob
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Answered by Praveen M. • Maths tutor
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