Answer:
6/35
Step-by-step explanation:
change 2/5 to 14/35 so the denominators are even.
after that you get -8/35+14/35
then you get 6/35
Answer:
60 degrees.
Step-by-step explanation:
We use trigonometry of a right angled triangle:
Adjacent side = 20 ft, Hypotenuse = 40 ft.
cos x = adjacent / hypotenuse = 20/40 = 1/2
x = 60 degrees.
Answer:
x = 59
Step-by-step explanation:
Since the angles of a quadrilateral add up to 360°, simply set the sum of all the angles to 360°:
x + x + (2x + 3) + (2x + 3) = 360
Combine like terms:
2x + 4x + 6 = 360
6x + 6 = 360
Get the x's on one side:
6x = 360 - 6
6x = 354
Solve by dividing by 6:
x = 59
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