Find the value of x
58°
152°
86°
40

64°

Step-by-step explanation:

The sum of the angles of a quadrilateral is 360°. So for this,

360° - 56° - 152° - 86° = 64°

x=64

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Step-by-step explanation:

58+152+86+x=360

296+x=360

360-296=64

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

boxplot e is the answer