Simplyfy (-9a - 20c) - (-15a + 3c) - (-22a - 7c) ?

8t-5r-t-3r I'm so confused on equations

Gerhard deposited $5600 into a savings account that earns 4.5% simple interest each year calculated annually. What is the future value of Gerhard's account after 12 years?

Use double angle formulas to find the exact value of sin2x, cos2x, and tan2x sinx=12/13, 0

Area of a 40cm semicircle

A student performed the following steps to find the solution to the equation x^2+14x+48=0. Where did the student go wrong? Step 1. Factor the polynomial into (x + 8) and (x - 6) Step 2. x + 8 = 0 and x - 6 = 0 Step 3. x = - 8 and x = 6 A.

How does one calculate the radius of a cone when given the total surface area

8 people at a party they all exchange handshakes how many handshakes are exchanged. if 50 people were at this party how many handshakes would there be. if there were a hundred people. if there were. n people

3.5 inches divided by 24.5 inches

Which set of rational numbers is arranged from least to greatest? how can i put this number for least to greatest 0.5,1/5,1/9,1

Which statement is true of the relationship between risk and return? The greater the risk, the greater the potential return. The relationship between risk and return varies. The greater the risk, the lower the potential return.