The hill describes a right triangle with the position of the cable (the base) = 80ft and makes an angle of 19° with the horizontal.
Let the height of the hill be x.
tan 19° = x/80
x = 80 tan 19° = 27.5462
The height of the hill and the pole = 27 + 27.5462 = 54.5462
The required length of the cable is given by sqrt(80^2 + 54.5462^2) = sqrt(6400 + 2975.2889) = sqrt(9375.2889) = 96.83 feet.
Answer: She should choose Elite cars because its $6 cheaper than Cars 4 hire.
Working out:
1) Elite Cars:
(0.30 x 80) + 25
= 24 + 25
= $49
2) Cars 4 Hire:
(0.25 x 80) + 35
= 20 + 35
= $55
Answer:
15 people are able to be at the charity gala because 77:55 divided by 5:17.
Answer:
a=2s-b-c
Step-by-step explanation:
s= (a+b+c)/2
2s=a+b+c
a=2s-a-b