Area of a shaded trapezium within a rectangle involving algebra.
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All answers ▸Solve x^2 - 2x - 15 = 0
Consider an isosceles triangle ABC, where AB=AC=1, M is the midpoint of BC, and <BAM=<CAM=x. Use trigonometry to find an expression for BM and by finding BC^2, show that cos2x = 1 - 2(sinx)^2.
Ayo is 7 years older than Hugo. Mel is twice as old as Ayo. The sum of their three ages is 77 Find the ratio of Hugo's age to Ayo's age to Mel's age.
Two simultaneous equations are given as 2x + y = 5 and 3x + y = 7. Find the value of x and y.