Answer:
1) 9
2) 7
3) -10
4) -54
5) -64
Step-by-step explanation:
It’s just basic substitution
Hope this helps!
Answer:
11.5 in
Step-by-step explanation:
Given that the blood-acohol level at time x is given by A(x)=-0.0082x²+0.06x. The blood-alcohol after 3 hours for a person who has drunk 5 ounces pf 80-proof whiskey will be:
A(3)=-0.0082(3)²+0.06(3)
A(3)=-0.0738+0.18
A(3)=0.1062
the amount of blood-alcohol after 3 hours will be 0.1062
Answer:
400
Step-by-step explanation:
2000 divided by 20% is 400
The correct answer would be 3 +/-

In order to solve for this you must first get the equation equal to 0.
x^2 + 6x + 9 - 6 ----> simplify like terms
x^2 + 6x + 3
Now knowing this we can use the coefficients of each one in descending order of power as a, b and c.
a = 1 (because it is the coefficient to x^2)
b = 6 (because it is the coefficient to x)
c = 3 (because it is the end number)
Now we can plug these values into the quadratic equation.


3 +/-

And those would be your two answers.