Answer:
area of trapazoid= 1/2 × b× h
so = 1/2×9×15
=1/2×135
=67.5cm
Answer:
8
Step-by-step explanation:
you just count backwards from 5 until you reach -4
X would represent in years by 10x
Answer:
Step-by-step explanation:
If this is in terms of angles, 4x+6 must be equal to 90 since it is half of the angle produced by a line (180°) So solving for 4x+6=90, x=21
Answer:
BC = 11
Step-by-step explanation:
using the sine ratio in the right triangle and the exact value
sin45° = 
, then
sin 45° = 
= 
= 
= ( cross- multiply )
BC = 11
