Simplify and write 0.6752 x 104 in scientific notation
1 answer:
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Keywords
quadratic equation, discriminant, complex roots, real roots
we know that
The formula to calculate the <u>roots</u> of the <u>quadratic equation</u> of the form is equal to
where
The <u>discriminant</u> of the <u>quadratic equation</u> is equal to
if ----> the <u>quadratic equation</u> has two <u>real roots</u>
if ----> the <u>quadratic equation</u> has one <u>real root</u>
if ----> the <u>quadratic equation</u> has two <u>complex roots</u>
in this problem we have that
the <u>discriminant</u> is equal to
so
the <u>quadratic equation</u> has two <u>complex roots</u>
therefore
the answer is the option A
There are two complex roots
Answer:
x = 12.6
Step-by-step explanation:
Sum of measure of all the arcs of a circle = 360°
m(arc CD) + m(arc CED) = 360°
Since, m(arc CED) = (20x)°
And m(arc CD) = (8x + 6)°
By substituting these measures in teh expression,
(20x)° + (8x + 6)° = 360°
(20x + 8x) + 6 = 360
28x = 360 - 6
28x = 354
x =
x = 12.64
x = 12.6