The shortest side of a trapezium is one-third the longer side. Given that the perpendicular distance joining the parallel sides is 12em, find the length of shortest side if the area of the trapezium is 240cm?
(3 marks)​

44

step-by-step explanation:

3x + 4y -25 =0 represents the amount of change sianna should recieve

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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