Hi!
We can see the river is a straight line.
This means that the angles that fall upon it are supplementary angles, and will add up to 180 degrees.
Therefore:

Combine like terms:

Subtract 21 from both sides:

Divide both sides by 3:

Therefore, the value of x is 53 degrees.
Here, you have to determine values of f(x) for negative domain. Domain are those values of x for which function is defined.
Since the function is a polynomial, every value of x∈R is defined for f(x).
And for every negative value of x, f(x) will always be positive because x is squared and square of negative real number is always positive.
0 is neither negative nor positive. Therefore, zero is not included in negative domain. If you plug say x= -0.00000956, f(x) will be greater than 1 because square of x will never be negative.
Thus, the range will always be positive or greater than equal to 1.
Therefore, y≥1
Answer:
$150
Step-by-step explanation:
50+25=75
since he spent another half 75 is the other half
so 75+75
150
Answer:
11.69 ft
Step-by-step explanation:
a) No, he is incorrect.
Angle of depression is always formed between line of vision and horizontal line.
Measure of angle of depression will be = 90° - 33°
= 57°
b)
Horizontal distance between the ant and the bottom of the tree

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