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x^2-5x-50=0. Solve for the positive value of x

recognise this equation has the form ax^2 + bx + c =0. An equation with this form is a quadratic. Recognise in a quadratic equation there will be 2 values of x that will equal 0. These 2 values will multiply...
EF
Answered by Ellis F. • Maths tutor
3377 Views

w and x are whole numbers. w >40, x<30. Work out the smallest possible value of w-x.

To get the smallest value of w-x we will need the smallest value of w and the largest value of x.Our smallest possible value of w=41.Our largest possible value of x=29.So the smallest value of w-x = 41-29 = 12
EG
Answered by Esme G. • Maths tutor
15732 Views

2x + 3y = 8 and 3x + 2y = 7 find x and y

These are simultaneous equations. To solve them, we need to do something to these equations to that either the coefficents of x or y are the same. So multiply each equation by a suitable number, a good choic...
TK
Answered by Tara K. • Maths tutor
17517 Views

Mike paid a total of £4.69 for a chocolate bar, a bag of crisps and a jar of jam. The jar of jam costs £2.19. The chocolate bar costs 57 pence. How much did the bag of crisps cost?

There are two methods of solving this question. First let's look at the prices we already know. The jar of jam is £2.19, or else said 2 pounds and 19 pence. The chocolate bar is 57 pence, so not a whole poun...
DZ
Answered by Daniela Z. • Maths tutor
2684 Views

Calculate 44 - (12 - 3^2)^2.

Remember the rule BIDMAS (Brackets, Indicies, Division, Multiplication, Addition, Subtraction) Inside the brackets we have: 12 - 3 2 and again need to remember BIDMAS. The next item to consider is the Indici...
ED
Answered by Emanuel D. • Maths tutor
4432 Views