Answer:
2.25 hours
Step-by-step explanation:
Given data
distance= 36 km
speed= 16 km/h
Speed= distance/time
substitute
16= 36/t
t= 36/16
t= 2.25 hours
18/36=x/280
36x=5040
x=140 ft.
Assuming she is looking at the tops of the tree and the building
☺☺☺☺
Step-by-step explanation:
a) Line AB ll DC
b) Line GH acts as a transversal.
c) <10 ; <12 , <9 ; <11
d) <8 = 180° - 120° = <u>60</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<6 = <u>120</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<5 = <u>60</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<4 = <u>60</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<3 = <u>120</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<2 = <u>120</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
<1 = <u>60</u><u>°</u><u>(</u><u>Ans</u><u>)</u>
Answer:
x = 117.9°
Step-by-step explanation:
We require to find the size of the angle x
Given the law of cosines
c² = a² + b² - 2ab cosC
Rearrange to give cosC in terms of the sides
Add 2ab cosC to both sides
c² + 2ab cosC = a² + b² ( subtract c² from both sides )
2ab cosC = a² + b² - c² ( divide both sides by 2ab )
cosC =
here a = 55, b = 50 and c = 90 and C = x
cosx =
=
= ← - indicates angle is obtuse
x = ( ) ≈ 117.9°
It depends on what happens to the price of the item during the sale which is not stated in your problem. So if it cost 6 dollars and goes on sale it should be 6 dollars.