Step-by-step explanation:
first one c/a
second one b/a
Its 8:00, because four 15 minutes is 9:00, so when you go back four 15 minutes, its 8:00
..........................................
<h2>3</h2>
Step-by-step explanation:
The equation of line passing through the two points is 
When substituted,the equation becomes 
which when simplified is 
The line clearly passes through origin.
The distance between two points is 
Distance between origin and
is
.
Distance between origin and
is 
Scale factor is 
So,scale factor is 
which when simplified becomes 3.