Answer:
C
Step-by-step explanation:
x²-14x-49=0
x²-14x+49=49+49
(x-7)²=98
(x-7)²=49×2
x-7=±7√2
x=7+7√2=7(1+√2)≈7(1+1.414)≈7(2.414)≈16.898≈16.9
or
x=7-7√2=7(1-√2)≈7(1-1.414)≈-7×0.414≈-2.898≈2.9
Answer:


Step-by-step explanation:
Given

per copy
Solving (a): Linear Equation
The total charges (y) is: the base charge + the rate * number of copies (x).
So, we have:

<em>The 0.44 is 44 cents converted to dollars</em>

Solving (b): Purchase if he budgets $76.16
This implies that y = 76.16
So, we have:


Collect like terms


Solve for x


Multiply the first fraction by six and get : 2x - 9y = 24
So if this system has no solutions, then b would be nine.
Answer:

Step-by-step explanation:
Given polynomials are:
,
and 
Now we need to add the given polynomials, then place the answer in the proper location on the grid. Also we need to write answer in descending powers of x.
So let's add them by combining like terms:


Hence final answer in descending order is 
Answer:
XZ
Step-by-step explanation:
The intersection of the 2 planes is along the line XZ