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Maths
GCSE

The width of a rectangle is X cm.
 The length is 1·5 cm more than the width.
 The perimeter of the rectangle is 17 cm. Write down an equation satisfied by X
 and solve it to find X.

Let's call the length 'L', and the width 'X'. Since the length is 1.5cm more than width, we can form the equation: L = X + 1.5 (Equation 1)Let's call the perimeter 'P'....

Answered by Oliver D. Maths tutor
6467 Views

Write the following in their simplest form: a) 8^0 b) 64^(2/3) c) 0.54545454...

a) 80 = 1b) 642/3 = (641/3)2 = 42 =16c) 0.54545454... = x 100x = 54.545454.... 100x-x = 54 99x = 54 x = 54/99 x = 6/11...

Answered by Emmanuel S. Maths tutor
3028 Views

Solve the simultaneous equations: 5x+5y = 6 7x+3y = 6

Label the equations 1) 5x+5y = 6 and 2) 7x+3y = 6 . Then rearrange equation 1 to make x the subject of the equation: 5x = 6-5y. You would then simplify this equation to find the equation for x: x = 6/5 - ...

Answered by Isobel B. Maths tutor
3123 Views

If a semi-circle has radius 4cm, work out the area of the semi-circle

The formula for the area of a circle is pir2,therefore for semi-circle, the formula becomes1/2pir2
Using our known values this is 1/2
pi*16 (4<...

Answered by Ben S. Maths tutor
4119 Views

Plot out y= x^2 - x - 2 for values of x from -3 to +3 and label the turning point

x y-3 10-2 4-1 00 -21 -22 03 4
And then be able to plot out these points on a simple graph.
The x-coordinate of the turning ...

Answered by Tutor118205 D. Maths tutor
2748 Views

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