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How do I use the quadratic formula?

So far in your learning it is likely that you have been learnt that if you can't factorise a quadratic equation then you can not solve for x. The quadratic formula is overcomes this restriction, allowing ...

Answered by Olumide I. • Maths tutor

2546 Views

Q) The equation of a curve is y=(x+4)^2+7. Find the co-ordinates of the turning point

Full Explanation:We have our Equation: y=(x+4)²+7
At the turning points, the gradient, (m) is zero m=0 = dy = 0To work out the g...

Answered by Jake C. • Maths tutor

3108 Views

There are 14 boys in a class and 16 girls. The Mean height of the class is 1.6m, the mean of the girls is 1.5m what is the mean height of the boys?

Mean for all students: (the sum of all the heights)/total number of students = (the sum of boys+sum of girls)/30 = 1.6sum of boys and girls = 1.6 x 30Mean for girls: (the sum of all the girls' heights)/to...

Answered by Caitlin J. • Maths tutor

4113 Views

(a) Express x +4x+7 in the form (x+ p) +q , where p and q are integers.

(x + 2)²+3

Answered by Dylan S. • Maths tutor

3993 Views

For sketching the graph of the modulus of f(x) (in graph transformations), why do we reflect in the x-axis anything that is below it?

Let's remember what applying a modulus to any number actually does. Applying the modulus to a number just gives us back the positive version of that number- if it is positive, we get back itself, and if i...

Answered by Stefanos R. • Maths tutor

4686 Views