A square is cut into three rectangles X, Y and Z. 10 cm
х
Not to scale
Rectangle X has length 10 cm.
Rectangle Y has length ncm and width 5 cm.
Z
5 cm
a) (i) Write down an algebraic expression for the width of rectangle X.
cm [1]
(ii) Write down an algebraic expression for the area of rectangle Y.
cm (1
b) Given that the three rectangles have the same area,
work out the value of n.
+
[3]

step-by-step explanation:

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

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