In △abc,

ad

and

be

are the angle bisectors of ∠a and ∠b and

de

║

ab

. find the length of

de

if perimeter of abde is 30 cm and ab = 12 cm.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

What does independent variable and dependent variable mean in math?