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Maths
GCSE

How do I deal with quadratic inequalities?

First of all, if not already done, you would arrange all the x's or whichever letter used on one side of the inequality. E.g. for x2+ 19x - 5 < 6x - 45 you would arrange it like: x2

Answered by Asha C. Maths tutor
2166 Views

Solve the following simultaneous equations: 2x-3y=16 x+2y=-6

First, label the two equations as follows:2x-3y=16 --> [1]x+2y=-6 --> [2]To obtain the same x value for both equations, [2]2: 2x+4y=-12 --> [3]Then, to eliminate the x values from both equati...

Answered by Masaki H. Maths tutor
2631 Views

Please explain how to multiply two exponential expressions

In the multiplication of exponential expressions, only exponents are added given that the expressions share the same base. If this is not the case, the expression remains the same or can be simplified. He...

Answered by Alvaro M. Maths tutor
2208 Views

Solve the following simultaneous equations: 2x - 3y = 16, x + 2y = -6

First we label the two equations as (1) and (2):2x - 3y = 16 (1)x + 2y = -6 (2)We want both equations to have the same number before one of the variables so the easiest way is to multiply equation (2) by ...

Answered by Tutor401319 D. Maths tutor
3833 Views

The diameter of a circle is 14cm, work out its area

The formula for the area of a circle is π x r2 and the radius of the circle (r) is found when you divide the diameter (given in the question) by 2. Therefore, when plugging in the radius (14 di...

Answered by Peter N. Maths tutor
5206 Views

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