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givi [52]
4 years ago
12

Use the discriminant to find the number of real roots in Y = x^2 – 6x + 9

Mathematics
1 answer:
BaLLatris [955]4 years ago
4 0
So discriminant is being counted from that equation:
b^2-4ac = 36-36 = 0

As discriminant is 0, then there is just 1 root -> -b/2a = 6/2 = 3.
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Since O is circumscribed about quadrilateral DEFG, the value of x is equal to: D. 68°.

<h3>What is a supplementary angle?</h3>

A supplementary angle can be defined as two (2) angles or arc whose sum is always equal to 180 degrees. Mathematically, a supplementary angle can be calculated as follows:

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In Geometry, the opposite angles of any cyclic quadrilateral that is inscribed inside a circle always form a supplementary angle. Thus, we would determine the value of x by using the mathematical expression above:

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2 years ago
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#1) a normal distribution has a mean of 101 and a standard deviation of 4.2. what is the z-score of 105?
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