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A kettle costs £50 in a sale. It was reduced by 30%. What was the original price of the kettle?

100% - 30% = 70%£50 = 70%£50/70 = 0.714£0.714 = 1%100% = £71.4
VM
Answered by Violeta M. • Maths tutor
3428 Views

Solve the simultaneous equations 5x + y = 21, x - 3y = 9

To solve, begin by multiplying both sides of the first equation by 3. This will make the coefficients of y in each equation an equal value of 3. With 15x + 3y = 63 and x -3y = 9, we can now simply add the eq...
EB
Answered by Ellie B. • Maths tutor
4849 Views

Find the coefficient of the x^2 term in in the expansion of (1+x)^4.

To get an example of what this question is asking: the expansion of (1+x)^2 can be found by distributing and gives 1+2x+x^2. The coefficient of the x^2 term here would be 1, and for the x^1 term it would be ...
JT
Answered by Joshua T. • Maths tutor
3611 Views

Write down the value of 36^ 1/ 2

Square root of 36 = -6,6
IA
Answered by Isra A. • Maths tutor
6262 Views

Simplify the following: 5(x+2) - 3(6-x)

Expand the brackets to get:= 5x + 10 - 18 + 3xThen collect like terms:= 8x-8Take out a common factor:= 8(x-1)
RH
Answered by Rebecca H. • Maths tutor
2997 Views