B² - 4ac
= 8² - 4*(-2)*(-9)
= 64 - 72
= -8
Answer:
11 years old
Step-by-step explanation:
3 years ago, Gloria was 32 years old
If Ivana's age is = x
Then, 4x = 32
x = 8
3 years ago, Ivana was 8 years old
So now she is 11 years old.
Lynn age: 7x+2. That's if you wanted an equation.
The longest angle would be across from the one with the longest side. In this case it would be across from DF