Answer:
Step-by-step explanation:
5k+ 6k+9k=20k
20k=£60
k=3£
£15, £18, £27
Explanation is in the file
tinyurl.com/wtjfavyw
Answer:
(2,-5) and (2,1).
Step-by-step explanation:
We need to find the find all the points having an x coordinate of 2 whose distance from the point (-2,-4) is 5.
A circle with center (-2,-4) and radius 5 represents all the points whose distance from the point (-2,-4) is 5.
Standard form of a circle is

where, (h,k) is center and r is the radius.


Now, put x=2.




Taking square root on both sides.




So, the y-coordinates of the points are -5 and 1.
Therefore, the required points are (2,-5) and (2,1).
Answer:
D
Step-by-step explanation:
D is the only graph where the shaded region is on 6 and less.