Answer:
x = 30°
Step-by-step explanation:
All three angles of a triangle must add up to 180°.
53 + 97 + x = 180
150 + x = 180
x = 30
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Answer:
5 units
Step-by-step explanation:
Diameter = two times the radius so the answer is 5 units.
Answer:
look at the picture to be more clear.
Hope it helps
-2 = - x + x^2 -4 => x^2 - x - 4 + 2 = 0
x^2 - x - 2 = 0
a is the coefficient of x^2 => a = 1
b is the coefficient of x => b = - 1
c is the constant term => c = - 2
quadratic equation: [- b +/- √(b^2 - 4ac) ] / 2a =
= { 1 +/- √[ (-1)^2 - 4(1)(-2)] } / (2(1) = { 1 +/- √ (1 + 8) } / 2 = {1 +/- √9} / 2 =
= { 1 +/- 3} / 2
