Top answers

Maths
GCSE

Solve x^2+6x+5=0

Use factorisation to solve this. You must find a pair of numbers that add to make 6 and multiply to make 5. In this question, 5 and 1 add to make 6 and they also multiply to make 5. So the factorised equa...

Answered by Carmen L. Maths tutor
2426 Views

Robin and Emma both buy cupcakes for a bake sale. Between them, they purchase 125 cupcakes for the bake sale. Emma buys 50% more cupcakes then Robin and gets a 20% discount. The total cost of the 125 cupcakes was £137.5. What is the price of one cupcake?

1 ) Identify the information given in the question:Total number of cupcakes bought: 125Number bought by Emma is 50% more than Robin: mathematically we write that was Emma = 1.5 Robin as 50% = 0.5 in decim...

Answered by Annelie B. Maths tutor
2407 Views

Expand and simplify x(x+4)(x-5)

Apply FOIL (First, outside, inside, last): (x + 4)(x - 5) = x2 - 5x + 4x -20 = x2 - x -20 x(x + 4)(x - 5) = x( x2 - x -20 ) = x3 - x2- 20x

Answered by James S. Maths tutor
3816 Views

Explain why the points (0,8) do not lie on the line y= 4x+9 ? (3 marks)

To see if (0,8) lies on the line y, substitute 0 (the x coordinate) into y = 4x+9 so y=4(0)+9 y=4(0)+9 therefore y= 0+9 = 9since the output (9) is not the same as the respective coordinate (8), (0,8) d...

Answered by Rinaldo L. Maths tutor
2466 Views

How do you solve a quadratic equation?

For example x2 - 2x - 35 = 0You would have two approaches to this question. You can either use the quadratic formula or you could simplify the expression. Using the formula you would have x = (...

Answered by Bianka T. Maths tutor
2477 Views

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