To "simplify" a polynomial expression means to use algebraic properties to while maintaining the value of the original expression. A. eliminate all variables in the expression B. eliminate all exponents in the expression C. rewrite the expression in the most reduced form possible D. rewrite the expression with the smallest exponents possible

answer: 60

step-by-step explanation:

1/2a + (2/3×30)   = 50

1/2a + 20 = 50

1/2a = 30

a = 60

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm