Points B, C and D lie on a straight line. AC is perpendicular to BD.
BC = 6 cm and AD = 30 cm.
B
Triangle ABC has area 42 cm².
6 cm
c
Diagram not drawn to scale
Calculate the size of angle x.
You must show all your working.
[5]
А
30 cm
D
J

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Add the fractions and simplify 1/2+ 1/3