Write the following as an algebraic expression; a) Half the sum of X and y
b) Half the cube of X subtracted from y​

1/2(x + y)

Step-by-step explanation:

The sum of x and y is  x + y

1/2 the sum of x + y is 1/2(x + y)

1/2 x^3

This is subtracted from y

y - 1/2 x^3

5/6

step-by-step explanation:

if i remember correctly with perpendicular stuff you just take away the negative

answer: this is not a question

step-by-step explanation: this is a answer