Answer:
36
Step-by-step explanation:
one calculator price =30/5=6
cost price of 6 calculator=6*6=36
(-8x²-11x+14)+(6x²-8x+4)
Combine términos iguales.
Este es su resultado:
-2x²-19x+18
Answer:
11/9
or 1 and 2/9
or 1.22222222222222222222222 (2 goes on forever)
Step-by-step explanation:
Answer:
Center of the circle: 
Radius of the circle: 
Step-by-step explanation:
Let's start by dividing both sides of the equation by the factor "3" so we simplify our next step of completing squares for x and for y:

Now we work on completing the squares for the expression on x and for the expression on y separately, so we group together the terms in "x" and then the terms in "y":

Let's find what number we need to add to both sides of the equation to complete the square of the group on the variable "x":

So, we need to add "1" to both sides in order to complete the square in "x".
Now let's work on a similar fashion to find what number we need to add on both sides to complete the square for the group on y":

Therefore, we need to add "
" to both sides to complete the square for the y-variable.
This means we need to add a total of
to both sides of the initial equation in order to complete the square for both variables:

Now recall that the right hand side of this expression for the equation of a circle contains the square of the circle's radius, based on the general form for the equation of a circle of center
and radius R:

So our equation that can be written as:

corresponds to a circle centered at
, and with radius 