p^2+6p+9=0
The discriminant of a quadratic is the expression inside the radical of the quadratic formula.
b^2−4(ac)
Substitute in the values of
a, b, and c.
6^2−4(1⋅9)
Evaluate the result to find the discriminant.
36-4(9)
36-36
0
Answer:
a single burger costs $2, and a single soda costs $1.
Step-by-step explanation:
Lets set up a system of equations, with b for the burgers and s for the sodas
3b + 3s = 12
5b + 3s = 18
rewriting to switch the order of the equations
5b + 3s = 18
3b + 3s = 12
Then, we need to eliminate one variable to make it easier for us to find both, let's eliminate s by multiplying the entire bottom equation by -1
5b + 3s = 18
-3b - 3s = -12
adding the two together, we get
2b = 6
divide by 2 on both sides and we get
b = 3
THen, we take that value and plug it in to either of our first two equations (I'm using the first equation), and we get
3* 3 + 3s = 12
multiply
9 + 3s = 12
subtract 9 from both sides
3 s = 3
divide both sides by 3
s = 1
this means that a single burger costs $2, and a single soda costs $1.
Answer:
6 ft
Step-by-step explanation:
The triangle CDE is half of the size of triangle ABC, so if you match up the corresponding sides, DE is half of AC. AC is 12 so DE is 6.
hope is helped!
1. 3/3 2. 3/4 the answer is 3/4
Answer:
Choice A
Step-by-step explanation: