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Solve algebraically the simultaneous equations: 6x=5-2y 12.5=3x+3y

  1. Rearrange both equations into the form ax + by = c. 3x+3y = 12.5 6x +2y = 5. 2) Make either x or y have the same coefficient in each equation. In this case we use x, to do this we multiply the first...
LW
Answered by Laura W. Maths tutor
2711 Views

Expand and simplify (x – 9)(x + 2)

x^2 - 7x - 18

JB
Answered by JOSEPH B. Maths tutor
6377 Views

Why do we need the constant of integration?

Consider three simple functions F(x)=2x, G(x)=2x-6, H(x)=2x + π/2. We can differentiate these functions with respect to x to get F’(x)=f(x)=2, G’(x)=g(x)=2, H’(x)=h(x)=2. Clearly the derivatives of these ...

PC
Answered by Panoraia C. Maths tutor
2807 Views

Find the coordinates of the mid-point AB where A (-3,-3) and B (1,3)

X coordinates = (-3+1)/2 = (-2)/2 = -1Y coordinates = (-3+3)/2 = (0) /2 = 0 Coordinates of the midpoint = (x,y) = (-1,0)
If they were struggling to visualise it/to avoid simple mist...

EW
Answered by Edward W. Maths tutor
2672 Views

h^2=25. solve this quadratic equation to find h.

h2 = 25So firstly, we must square root each side of the equation.(square root) h2 = (square root)25.so... h= (square root)25.h=5. or h=-5.

HS
Answered by Helen S. Maths tutor
2998 Views

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