Arthur had $90. he spent $31 and gave $19 to his brother. what fraction of arthur's
money is left?
i dont get itit isn’t 1/3 because that would be 30.. it’s not 1/2 because it’s not !

Step-by-step explanation:

Frist you add $31 and $19. You would get $50, subtract $50 from $90. $40 is left after you subtract. You write the difference in fraction form: 40/90. Simply into lowest term.   40/90= 4/9

4/9

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.