It is the center point of graph possitive and negative.
Answer:
D. sin m∠C = 2 square root of 5 all over 5
Step-by-step explanation:
The triangle ABC is a right angled triangle. The angle ∠C is where we are asked to find. The side AB measures 6 , AC measures 3 and the side BC measures 3√5.
The longest side of a right angle triangle is the hypotenuse, that means the side with length 3√5 is the hypotenuse.
Therefore side BC is the hypotenuse side and we are asked to find the angle C. AB is the opposite side while AC is the adjacent side.
Using
sin C = opposite/hypotenuse = 6/3√5 = 2/√5 = 2√5/5
cos C = adjacent/hypotenuse = 3/3√5 = 1/√5
The inequality in the box has to be written as
x² + 2x - 80 ≤ - 65
<h3>How to solve the inequality</h3>
We have
(10 + x)1 * (16-2x) ≥ 130
Next we would have to open the bracket
160 + 16x - 20x - 2x² ≥ 130
Then we would have to arrange the equation
- 2x² - 4x + 160 ≥ 130
Divide the equation by two
- x² - 2x + 80 ≥ 65
This is arranged as
x² + 2x - 80 ≤ - 65
Read more on inequalities here:
brainly.com/question/24372553
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