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Solve the equation: 5(x + 2) = 45

Start by writing down the question5(x+2) = 45The aim is to "free" or solve for the variable "x", we work from outside the brackets. First step is to get rid of the 5 on the left hand side...
BS
Answered by Brandon S. • Maths tutor
6111 Views

solve the simultaneous equations: 2x-3y = 16 and x + 2y = - 6

First we need to subtract a variable from another to eliminate a variable from both equations. To do this we need to make either the X value the same or the Y value the same.We can do this by multiplying the...
DR
Answered by Dana R. • Maths tutor
4618 Views

What is differentiation and what does it actually mean?

Differentiation is the process of finding the rate of change of a function with respect to its independent variable. In simpler terms, by differentiating, you can find the gradient of a curve. If its a strai...
JB
Answered by Jess B. • Maths tutor
5080 Views

Factorise and solve x^2 - 8x + 15 = 0

Step 1: Factorise . In the final factorised form, your answer would be written in the form (x+a)(x+b). When expanded, this becomes: x^2 + ( a + b )x + ab . Therefore, to factorise x^2 - 8x + 15, you need a +...
HS
Answered by Hanan S. • Maths tutor
3864 Views

Sue has 2 cats. Each cat eats 1 4 of a tin of cat food each day. Sue buys 8 tins of cat food. Has Sue bought enough cat food to feed her 2 cats for 14 days? You must show how you get your answer.

Initially we must work out the rate at which the tin food is consumed by 2 cats, so we multiply 1/4 (tin food per day for 1 cat) by 2(number of cats), which equals 2/4, so both cats consume 2/4 of a tin per ...
GK
Answered by Grisilda K. • Maths tutor
18171 Views