Answer:
x= 16.3
Step-by-step explanation:
3x/6+1=7
3x/7=7
times 7 on each side
3x=49
divide each side by 3
x=16.3 continuing
Answer:
5 by 4
Step-by-step explanation:
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Answer:
(x + 1)(x + 2)
Step-by-step explanation:
Factorise the denominator of the first fraction
x² + 3x + 2 = (x + 1)(x + 2) ← in factored form
The denominator of each fraction must be able to divide into the lcd
Hence lcd is (x + 1)(x + 2)
Answer:
Step-by-step explanation:
To simplify this expression you must use the following trigonometric identities
I
II
Remember that
Only if for all x
If f(x) is not greater than 0 for all x then
Now we have the expression:
then using the trigonometric identities I and II we have to:
is not greater or equal than 0 for all x. So.
Finally
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Answer:
1731 ft
Step-by-step explanation:
The tangent relation is useful in this problem.
Tan = Opposite/Adjacent
The height of the light is found to be ...
tan(11°) = height/(639 ft)
height = (639 ft)·tan(11°) . . . . . solve for height
Then the distance from the light to point B is ...
tan(3°) = height/(B distance)
B distance = height/tan(3°) = (639 ft)·tan(11°)/tan(3°) ≈ 2370 ft
Then the distance from point A to point B is ...
2370 ft -639 ft = 1731 ft . . . AB distance