What is 5x-(3+7)=9+2(x-8)
2 answers:
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That's vertex form for a parabola and we read off vertex (p,q) as
Answer: Vertex (5,7)
The negative <em>a</em> tells us this is a downward opening parabola (upside down from the usual . I remember CUP - Concave Up Positive; here <em>a </em>is negative so not a cup, instead concave <em>down.</em> The same rule applies to second derivatives in calculus so memorize it now and use it later.
Answer: downward
Given:
m∠1= x° and m∠2 = (x +50)°.
To find:
The value of x, m∠1 and m∠2.
Solution:
From the figure it is clear that, transversal side intersect the opposite sides which are parallel and form ∠1 and ∠2.
Sum of same sided interior angles is 180 degrees. So,
Divide both sides by 2.
Now,
Therefore, the correct option is C.