F(x) = -5x + 1
f(-2) = -5(-2) + 1
f(-2) = 10 + 1
f(-2) = 11
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Answer: f(-2) = 11 (Answer C)
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Discriminant for the quadratic equation
is 
How to find the d Discriminant of the quadratic equation ?
We know that the standard quadratic equation

Discriminant of the equation is 
Equation given in the question is

So we can find the values of 

Substitute the values

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Given:
The pairs of angles are:
36°,24°
18°,72°
96°,84°
To find:
Whether each pair of angle measurements are complementary, supplementary or neither.
Solution:
Two angles are complementary if there sum is 90 degrees.
Two angles are supplementary if there sum is 180 degrees.
For 36° and 24°,

So, this pair is neither complementary not supplementary.
For 18° and 72°,

So, this pair is complementary.
For 96° and 84°,

So, this pair is supplementary.
Answer: 23
Step-by-step explanation:
Answer:
z = 8
Step-by-step explanation:
All angles inside a triangle add up to 180 so:
90 + 40 + 5z + 10 = 180
5z + 140 = 180
5z = 40
z = 8