Answer:
Step-by-step explanation:
General Equation of circle is
----------- (1)
Here
Radius r is distance from origin (x1, y1) to point (x2, y2)=(-3, -6)
Substituting values in equation (1)
Answer:
x must be greater than -53/14
(im not 100% sure but i think this is correct)
2x because its 2 times the price of the book (x)
Answer:
22.84, 5.83
Step-by-step explanation:
Pythagoras theorem states that: a^2+b^2=c^2
So, for red triangle, it will be: 9^2+21^2=b^2
81+441=b^2
522=b^2
square root of 522=b
22.84=b
For purple one,
3^2+5^2=a^2
9+25=a^2
34=a^2
square root of 34=a
5.83=a
Answer: 0.3125 hours
Step-by-step explanation:
The formula for time taken to cover a distance is:
= Distance / Speed
Distance = 2.5 miles
Speed = 8 miles per hour
Time taken = 2.5 / 8
= 0.3125 hours
In minutes this is:
= 0.3125 * 60 mins
= 19 mins approx
