ANSWER
The vertex is (-2,1)
EXPLANATION
We want to find the vertex of

We complete the square to obtain,

The first three terms forms a perfect square trinomial.

The vertex form is

This equation is in the form;

where (h,k)=(-2,1) is the vertex.

Rounding to nearest thousand gives 76,000 mg of chlorine
Answer:
x=-5
Step-by-step explanation:
-2x-41=5x-6
-35=7x
-5=x
Answer:
(a+b) - (ab)
Step-by-step explanation:
sum of two numbers a and b decreased by their product
(a+b) - (ab)
Answer:
2.23kg
Step-by-step explanation:
If you can get 1 kg for $4.50. You can perform a ratio to find out how much you get for $10.
1/4.50=x/10
.2222222=x/10
multiply the 10 on both sides
x=2.23 kg for $10