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faltersainse [42]
3 years ago
11

Find the slope of the line y=5/9x

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0
The slope of the line is 5/9.
Dominik [7]3 years ago
5 0
5/9
the slope is rise over run also, when a question is set up as y=mx,the m is the slope.
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20. A computer programmer works 40 hours per week. What is an equation that
Lesechka [4]

Answer:

h=40w

Step-by-step explanation:

The number of hours is equal to the number of weeks worked times 40 hours per week. This equation gives the total number of hours worked in however many weeks were worked.

5 0
3 years ago
Find a basis for the column space and rank of the matrix ((-2,-2,-4,1),(7,-3,14,-6),(2,-2,4,-2)(2,-6,4,-3))
Novosadov [1.4K]

Answer:  

  • B=\{\left[\begin{array}{c}-2\\-2\\-4\\1\end{array}\right], \left[\begin{array}{c}7\\-3\\14&-6\end{array}\right], \left[\begin{array}{c}2\\-2\\4\\-2\end{array}\right]  \}[/tex]  is a basis for the column space of A.  
  • The rank of A is 3.  

Step-by-step explanation:

Remember, the column space of A is the generating subspace by the columns of A and if R is a echelon form of the matrix A then the column vectors of A, corresponding to the columns of R with pivots, form a basis for the space column. The rank of the matrix is the number of pivots in one of its echelon forms.

 Let  A=\left[\begin{array}{cccc}-2&7&2&2\\-2&-3&-2&-6\\-4&14&4&4\\1&-6&-2&-3\end{array}\right]  the matrix of the problem.  

Using row operations we obtain a echelon form of the matrix A, that is

R=\left[\begin{array}{cccc}1&-6&-2&-3\\0&9&2&0\\0&0&-8&-21\\0&0&0&0\end{array}\right]

Since columns 1,2 and 3 of R have pivots, then a basis for the column space of A is

B=\{\left[\begin{array}{c}-2\\-2\\-4\\1\end{array}\right], \left[\begin{array}{c}7\\-3\\14&-6\end{array}\right], \left[\begin{array}{c}2\\-2\\4\\-2\end{array}\right] \}.  

And the rank of A is 3 because are three pivots in R.

8 0
3 years ago
Find the value of this expression if x = 3.
tensa zangetsu [6.8K]

Answer:

9

Step-by-step explanation:

x2 + 3

(3)2 + 3

6 + 3

9

3 0
4 years ago
Read 2 more answers
IVE BEEN STUCK ON THIS FOR ABOUT 3 HOURS
V125BC [204]
A. Is the attached image. The slope is 7.5x

b. 1 = 7.5x

x = 1.33333…

This is hours so we must multiply this by 60

x = 8 min

3 0
3 years ago
Solve this question. Check your solution.<br> -5 + s &gt; -1
HACTEHA [7]
<span><span><span>−5</span>+s</span>><span>−1

</span></span>Step 1: Simplify both sides of the inequality.

<span><span>s−5</span>><span>−1

</span></span>Step 2: Add 5 to both sides.

<span><span><span>s−5</span>+5</span>><span><span>−1</span>+5
</span></span><span>s>4

</span>Answer:<span>s><span>4

hope this helps!</span></span>
3 0
3 years ago
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