Answer:
In an isosceles triangle, the legs of the triangle have same lengths.
• substitute:
Answer:
D 56
Step-by-step explanation:
cos x = 5/9
x = 56°
have a great day
Answer:
-5/13
Step-by-step explanation:
I don' treally sure if it correct
X^2 + 5x - 5 = 0
This is a quadratic equation that cannot be factored. It can be solved using the quadratic formula or by completing the square.
the quadratic formula is x = (-b +-sqrt(b^2 - 4ac))/2a
a is the coefficient of the x^2, b is the coefficient of the x, and c is the constant.
a = 1, b = 5, c = -5
x = (-5 +- sqrt(25+20))/2
x = (-5 +- sqrt(45))/2
x = (-5 + - 3 sqt 5))/2
x = (-5 + 3sqrt5)/2 and x = (-5 - 3sqrt5)/2
