A negative correlation: when the number of years increase the value of the car decrease.
I think the correct answer from the choices listed above is option C. It is the metal Na that will react with water to produce a metal hydroxide and hydrogen gas. It reacts violently with water forming sodium hydroxide and the hydrogen gas.
Answer:
(x+1)(x-1)(x+3)(x-3)
Step-by-step explanation:
x4-10x^2+9
Group expression so that the coefficients of the x^2 terms add up to +9.
= x^4 -9x^2 - x^2+9
match coefficients in both groups
= x^4 -9x^2 - (x^2-9)
factor each group
= x^2 (x^2-9) - 1(x^2-9)
now factor out the common factor (x^2-9)
= (x^2-1)(x^2-9)
Finally, factor each quadratic factor
= (x+1)(x-1)(x+3)(x-3)
Answer:
9
Step-by-step explanation:
3−4x=−60+3x
Step 1: Simplify both sides of the equation.
3−4x=−60+3x
3+−4x=−60+3x
−4x+3=3x−60
Step 2: Subtract 3x from both sides.
−4x+3−3x=3x−60−3x
−7x+3=−60
Step 3: Subtract 3 from both sides.
−7x+3−3=−60−3
−7x=−63
divide by -7
9
