Answer:
1. 
Step-by-step explanation:
We can see that CD is angle bisector, So we will use angle bisector theorem which states that the angle bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle.
We can set up an equation as:
Upon substituting our given values we will get,
Cross multiplying our equation we will get,
Therefore, the length of AD is units and 1st option is the correct choice.
The simplest form of the given expression can be written as -5x² + 25x - 3.
The given parameters:
2x(x + 6) - 7x² + (13x - 3)
The given expression can be simplified as follows;
2x(x + 6) - 7x² + (13x - 3)
= 2x² + 12x - 7x² + 13x - 3
<em>collect similar terms together</em>
= (2x² - 7x²) + (12x + 13x) - 3
= -5x² + 25x - 3
Thus, the simplest form of the given expression can be written as -5x² + 25x - 3.
Learn more about simplification of algebras here: brainly.com/question/432678
Answer:
x = 7
Step-by-step explanation:
-6+7x = -2x+57
+6+2x +2x+6
9×/9 = 63/9
× = 7
Answer:
The right answer is the second
Step-by-step explanation:
D=b^2-4ac
D=25+12
D=37
Answer:
-1
Step-by-step explanation:
took the exam on edge
