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A rectangle has an area of 20 cm2. Its length and width are enlarged by scale factor 3. Find the area of the enlarged rectangle.

Area of rectangle is 20 cm 2 . The new area of the enlarged rectangle is the original area, 20 cm 2 , times the area scale factor. We are only given the length scale factor, therefore, we need to work out th...
PB
Answered by Paulina B. • Maths tutor
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Solve 7(x+2)=5x+21

The first thing we must realise is that there are brackets in this equation and thus this has to be dealt with. We expand out the brackets on the left side by multiplying 7 by x and 2 to obtain '7x+14'. We n...
Answered by • Maths tutor
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Draw a graph of x = (y+4)/4.

Note: There are multiple ways to do this, so find a way that works for you!Step 1: Get rid of the fraction.Step 2: Rearrange the new formula into y = mx + c.Step 3: Find the y-intercept and the x-intercept.S...
TN
Answered by Tarin N. • Maths tutor
3494 Views

How do you solve simultaneous equation where one of them involves powers?

Example: y - 3x = 2 , x 2 + y 2 = 4 y= 3x + 2 x 2 + (3x+2) 2 = 4 10x 2 + 12x + 4 = 4 10x 2 +12x=0 x(10x+12)=0 x=0 or x=-1.2 y=3 0 + 2 = 2 (0,2) is a solution y = 3 -1.2 + 2=-1.6 (-1.2,-1.6) is a solution
LF
Answered by Luke F. • Maths tutor
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Explain what is meant by qualitative data

Qualitative data takes a narrative form that is non-numerical, e.g. a diary entry.
LK
Answered by Lizzy K. • Psychology tutor
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