Solve for x: please help
2 answers:
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Answer:
Step-by-step explanation:
Given that,
Perpendicular = 49 ft
Base = 22 ft
We need to find the angle of elevation of the sun. It can be calculated using trigonometry as follows :
So, the required angle of elevation is .
Question:
Which fraction is equivalent to ?
- because
- because
and
- because
and
- because
Answer:
- because
and
Step-by-step explanation:
Two fractions are said to be equal if and only if they give the same value when simplified.
The equivalent of is as explained in the selected option;
First, divide numerator and denominator by 2
Then simplify
2/2 = 1 and 6/2 = 3; So;
Multiply numerator and denominator by 3
Hence, is equivalent to
Answer:
- no solution
Step-by-step explanation:
We can use the second expression to substitute for y in the first expression. Then we have ...
... 1/2x +11 = -7x^2 -9x +6
Subtracting the right side, we get
... 7x^2 +(9 1/2)x +5 = 0
Eliminating fractions by multiplying by 2, this is ...
... 14x^2 +19x +10 = 0
The discriminant of this equation will tell the number and kind of roots. For a=14, b=19, c=10, the discriminant is ...
... b^ -4ac = 19^2 -4·14·10 = 361 - 560 = -199
Since this value is negative, we know the two roots to the quadratic will be complex. There are no real solutions.
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The graph shows the two curves do not intersect, hence there are no values of x that will make the y-values match.
