Answer:
3/10 kilos per hr
Step-by-step explanation:
1/4÷5/6=1/4×6/5
=6/20=3/10
D. {x | x E R} because its all real numbers
We can use trigonometry. The cosine of 15 will be the side adjacent to the 15-degree side (the one we are looking for) divided by 20, the hypotenuse. As cos(15) is about .966, we get 19.32 as the side we are looking for.