Answer:
only if the denominator(the number you're going to divide it with) is negative for example : 5÷-3. Note : it only works in division!!!!!!!!!
Perfect-square trinomials are of the form:
and are expressed in squared-binomial form as: 
The only possible choice for squared-binomial form is
Answer: correct choice is A.
Let the function be (3x+15)/(6-x) then the value of x exists at -5.
<h3>
What i
s the value of x?</h3>
Given: Rational Expression (3x+15)/(6-x)
To find the value of x when given a rational expression equivalent to 0.
To estimate the value of x, convey the variable to the left side and convey all the remaining values to the right side. Simplify the values to estimate the result.
Consider, (3x+15)/(6-x) = 0
3x + 15 = 0(6-x)
3x + 15 = 0
Subtract 15 from both sides of the equation, e get
3x + 15 - 15 = 0 - 15
simplifying the above equation, we get
3x = 0 - 15
3x = -15
Divide both sides by 3, then we get
x/3 = -15/3
x = -5
Therefore, the value of x exists at -5.
To learn more about the value of x refer to: brainly.com/question/11874663
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Answer: The missing number in the sequence is 
Step-by-step explanation:
Since we have given that
First term = a= 
Common difference = d is given by
Therefore, it forms an arithmetic sequence.
Since, 
is missing,
So,
Hence, the missing number in the sequence is
<span>(a.)
Let's say α is the angle that subtends from the top of the screen to horizontal eye-level.
Let β be the angle that subtends from the bottom of the screen to horizontal eye-level.
tanα = (22 + 10 - 4) / x = 28/x
α = arctan(28/x)
tanβ = (10 - 4) / x = 6/x
β = arctan(6/x)
Ɵ = α - β
Ɵ = arctan(28/x) - arctan(6/x)
(b.)
tanƟ = tan(α - β) = (tanα - tanβ) / (1 + tanα tanβ)
tanƟ = (28/x - 6/x) / [1 + (28/x)(6/x)]
tanƟ = (22/x) / [1 + (168/x²)]
tanƟ = 22x / (x² + 168)
Ɵ = arctan[22x / (x² + 168)]</span>
