<span>These ones are correct:
Multiply the value of the first variable by one of the original equations to solve for the second variable.
</span><span>Solve for one of the variables
</span><span>Substitute the value of the known variable into one of the original equations to solve for the unknown variable.</span>
Answer:
ΔABC ~ ΔEFD
Step-by-step explanation:
ΔABC ~ ΔEFDc
Answer:
x=6,-6
Step-by-step explanation:
![x^{2} -36=0\\Square root [tex]x^{2}](https://tex.z-dn.net/?f=x%5E%7B2%7D%20-36%3D0%5C%5C%3C%2Fp%3E%3Cp%3ESquare%20root%20%5Btex%5Dx%5E%7B2%7D)
and 36
(x+6)(x-6)=0\\
x=6,-6[/tex]\\
Answer:
CD + 20
Step-by-step explanation:
If AB = 20, then AB + CD = 20 + CD
Answer: CD + 20
