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timiaparker
23.07.2019 •
Mathematics
What % of £16 is 40p? explain how to do it as im confused
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Ответ:
x/100 *16 = 0.40
0.16x=0.40
0.40/0.16= 2.5
2.5% of £16 is 0.40p
Ответ:
1.Scale factor is 1/4
2. The coordinates are .P''(-1,0) ,Q''(0,-1),R''(2,-1)
Step-by-step explanation:
The formula for dilation is
A(x,y)A'(sx, sy) where s is the scale factor of dilation
Taking point R(-8,-4) R'(-2,-1) finding the scale factor of dilation will be;
s(-8) = -2
s=-2/-8 = 1/4
scale factor is 1/4
2.Given that triangle P'(1,0), Q'(0,-1) and R'(-2.-1) then applying reflection about the y-axis, the formula states that the y-coordinate will remain the same but the x-coordinate will take an opposite sign
This will mean
P'(1,0)P''(-1,0)
Q'(0,-1)Q''(0,-1)
R'(-2.-1)R''(2,-1)