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Maths
GCSE

Solve algebraically the simultaneous equations, giving your answers in terms of b : 3x+by=5, x-y=-2

First, I would label the two equations 1 and 2:(1) 3x+by=5(2)x-y=-2Next, multiply (2) by 3 and subtract this equation from (1) in order to cancel out the x terms: 3x+by=5-(3x-3y=-6)This results in the equ...

TL
Answered by Thomas L. Maths tutor
3035 Views

A straight line goes through the point (7, 5) with a slope of 2. What is the equation of the line?

Th equation of a line is denoted as y = mx + c, with m as the slope and c as the y intercept. We already know that the slope is 2. Since the line passes through the point (7, 5)...

CC
Answered by Caitlin C. Maths tutor
5400 Views

Simplify- (8/27)^(2/3)

We know that (8/27)^(1/3). = (2/3)Then do (2/3)^2 = (4/9)Split up 2/3, into powers of 1/3, and 2.

TM
Answered by Theo M. Maths tutor
4901 Views

solve the simultaneous equation: 8x+2y=46; 7x+3y=47

To solve this problem, we want to make either the x or the y values either equation the same.To work out whether to change the x or the y values, work out the lowest common multiple for each.For x, the va...

JW
Answered by Jess W. Maths tutor
4656 Views

Solve the equation 10x + 4 = 12x + 2

2 = 2xTherefore x = 1

ZY
Answered by Zain Y. Maths tutor
2876 Views

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