The following answer is correct only if b is the measure of an angle in degrees.
The complement is 90-43 = 47 degrees.
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Whatever you do to one side of the equation (equals sign), you must do to the other: 43 - b = 24 ⇒ 43 - b + b = 24 + b ⇒ 43 = 24 + b ⇒ 43 - 24 = 24 + b - 24 ⇒ 19 = b So b is 19.
(A' ∩ B') = (A È B)'
30 is the answer A+ student raynaray
With the information that is available from the question, it is impossible.
Since the angles are complementary, [ A + B = 90 ], so we can substitute (90-B) wherever we see 'A'.The question tells us that [ A - B = 22 ]Make the substitution for ' A ':(90 - B) - B = 2290 - 2B = 22-2B = -682B = 68B = 34A = 56