Write the expanded form of the expression.
-1/2 (y - x) = ?

The expanded form of the expression is

Step-by-step explanation:

We need to write expanded form of the expression

For expansion we will use distributive property of multiplication over addition

Applying above rule:

So, the expanded form of the expression is

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet