Please answer A, B & C form a triangle where ∠ BAC = 90°.
AB = 7.8 mm and CA = 6.4 mm.
Find the length of BC, giving your answer rounded to 1 DP.

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a.r'(–3, 1),  s'(–3, 5)b.r'(–1, 3),  s'(–5, 3)c.r'(1, 3),  s'(5, 3)d.r'(5, 3),  s'(1, 3)

Write the pair of fractions as a pair of fractions with a common denominator

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}