(a-25b)(a+4b)=0
Use the quadratic formula or complete the square by looking at the factors
sixty nine thousand and four hundred
“d” is the smallest, “e” is the middle and “f” is the largest. i like your username btw :)
Eqn (1)*3: 15x + 6y = -9 -> Eqn (3)
Eqn (3) - Eqn (2): 12x = -15
x = -5/4 = -1 1/4
Eqn (2): -15/4 + 6y = 6
6y = 9 3/4
y = 1 5/8
x = -1 1/4
y= 1 5/8
Answer:
BC = 6
Step-by-step explanation:
Using the sine ratio in the right triangle and exact value
sin30° = 
sin30° = 
= 
= 
= ( cross- multiply )
2x = 12 ( divide both sides by 2 )
x = 6
That is BC = 6
