ANSWER
C) (6,-8)
EXPLANATION
The equations are:

and

We substitute the first equation into the second equation to get:

We multiply through by 3 to get:

Group similar terms,


Divide both sides by 7 to get,

Put this value of x into the first equation to get;


Answer: 60 degrees
Explanation: the angles of a triangle sum to 180 degrees, and all the angles in an equilateral triangle are the same so every angle in an equilateral triangle must equal 60 degrees.
You can use prime factorization to figure this out.
<span>
4 x 14 = 56
4 + (14) = 18
Final answer: </span>4 and 14
Answer:
Area: (3+√7) x (1+2√7) = 17+7√7 = 35.52
Perimeter: 2(3+√7) + 2(1+2√7) = 8+6√7 = 23.87
The function f(x) is less than 0 at x < -1.8
<h3>How to analyze the graph?</h3>
The missing graph is added as an attachment
The interval where f(x) < 0 are the intervals where the y value of the function is less than 0.
This in other words, represent the negative y-axis
From the attached graph, the function f(x) is less than 0 at x < -1.8.
This extends till x = infinity
Hence, the function f(x) is less than 0 at x < -1.8
Read more about function interval at:
brainly.com/question/27831985
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