20%
100%(total points possibly given)
- 80% (points received)
equals 20%
$6.79 - $3.95 = $2.84. Since you’re rounding to the nearest half dollar, you’d found to $3. $2.84 is closer to $3 than $2.50
$3 - $2.84 = $.16
$2.84 - $2.5 = $.34
Answer: hello your question is poorly written hence I will provide the required matrix
answer :
A = ![\left[\begin{array}{ccc}1&0&1\\0&1&1\\1&-1&0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%261%5C%5C0%261%261%5C%5C1%26-1%260%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
Given that the basis of the orthogonal complement have been provided already by you in the question I will have to provide the Matrix
The required matrix
![\left[\begin{array}{ccc}1&0&1\\0&1&1\\1&-1&0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%261%5C%5C0%261%261%5C%5C1%26-1%260%5Cend%7Barray%7D%5Cright%5D)
column1 = column 3 - column2
where column 3 and column 2 are the basis of the orthogonal complement of the column space of the Matrix
Answer: C
Step-by-step explanation:
By the difference of squares, 
Answer:

Step-by-step explanation:
Method 1
we know that
The equation of a vertical parabola in vertex form is equal to

where
a is the leading coefficient
(h,k) is the vertex
we have
(h,k)=(-1,-9)
substitute

Remember that
one root is (-7,0)
substitute and solve for a




therefore

Method 2
I use the fact that the roots are the same distance from the vertex
the distance from the given root to the vertex is equal to
6 units
so
If one root is x=-7
then the other root is
x=-1+6=5
The general equation of the quadratic equation is equal to

we have the vertex (-1,-9)
substitute the value of x and the value of y and solve for a





so
Expanded the equation, complete the square and rewrite as vertex form