Calculate the area of the triangle. Please help!

Select the correct answer from each drop-down menu. rewrite the formula to find voltage. the formula for electrical power (p, in watts) is where v is the voltage in volts and r is the resistance in ohms. for a particular brand of water heater, r is 32 ohms and p is 0.5 watts. the formula to find v is , and the voltage at which the heater operates is volts.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)