Answer:
-2
Step-by-step explanation:
1.
a.Irrational
b. Irrational
c. Rational
d.Irrational
2.
Is Rational
Is an integer
Is a whole number
3.
Is Rational
Is a real number
4.
Is Rational
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As far as I can tell you got them all correct, well done :D
Angle sum of a triangle = 180°
Therefore:
Equation No. 1 -
2 ( 2x - 4 ) + 5y = 180°
2 ( 2x - 4 ) + 5 [ ( 2x - 4 ) / 5 ] = 180
4x - 8 + [ 5 ( 2x - 4 ) / 5 ] = 180
4x - 8 + 2x - 4 = 180
4x + 2x = 180 + 8 + 4
6x = 192
x = 192 / 6
x = 32°
Equation No. 2 -
5y = 2x - 4
y = ( 2x - 4 ) / 5
ANSWER:
x = 32°
