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Maths
GCSE

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 ...

DR
Answered by Dana R. Maths tutor
3705 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 st...

JB
Answered by Jess B. Maths tutor
3324 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

HS
Answered by Hanan S. Maths tutor
3041 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 consu...

GK
Answered by Grisilda K. Maths tutor
16160 Views

Solve for x and y using simultaneous equations: 3x+y=10 x+y=4

3x+y=10 _x+y=4-------------2x=6x=3x+y=43+y=4y=1

CL
Answered by Charlieanne L. Maths tutor
2399 Views

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