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3 years ago

Please help guys Describe constant rate of change.

2 answers:

7 0

I would describe the constant rate of change but where is the question for the picture please apply the picture or the questions I can answer thank you have a nice day

zubka84 [21]3 years ago

5 0

Changes the same amount over time. every 10 minutes you get 1 dollar. every 20 minutes you get 2 dollars.

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Which of the following is a ray shown in the drawing?

slavikrds [6]

Answer:

So to get the answer we need to find both of the rays. So first we need to find the end points for the horizontal one. That would be D and E for the horizontal. Those are points, do the same for the diagonal one. AC would be it. AC and DE would be the answer

4 0

3 years ago

Suppose the coefficient matrix of a linear system of four equations in four variables has a pivot in each column. Explain why th

Veseljchak [2.6K]

If the coefficient matrix has a pivot in each column, it means that it is shaped like this:

$A=\left[\begin{array}{cccc}a_{1,1}&a_{1,2}&a_{1,3}&a_{1,4}\\0&a_{2,2}&a_{2,3}&a_{2,4}\\0&0&a_{3,3}&a_{3,4}\\0&0&0&a_{4,4}\end{array}\right]$

So, the correspondant system

$Ax = b$

will look like this:

$\left[\begin{array}{cccc}a_{1,1}&a_{1,2}&a_{1,3}&a_{1,4}\\0&a_{2,2}&a_{2,3}&a_{2,4}\\0&0&a_{3,3}&a_{3,4}\\0&0&0&a_{4,4}\end{array}\right]\cdot \left[\begin{array}{c}x_1\\x_2\\x_3\\x_4\end{array}\right] = \left[\begin{array}{c}b_1\\b_2\\b_3\\b_4\end{array}\right]$

This turn into the following system of equations:

$\begin{cases}a_{1,1}x_1+a_{1,2}x_2+a_{1,3}x_3+a_{1,4}x_4=b_1\\a_{2,2}x_2+a_{2,3}x_3+a_{2,4}x_4=b_2\\a_{3,3}x_3+a_{3,4}x_4=b_3\\a_{4,4}x_4=b_4\end{cases}$

The last equation is solvable for $x_4$ : we easily have

$x_4=\dfrac{b_4}{a_{4,4}}$

Once the value for $x_4$ is known, we can solve the third equation for $x_3$ :

$x_3 = \dfrac{b_3-a_{3,4}x_4}{a_{3,3}}$

(recall that $x_4$ is now known)

The pattern should be clear: you can use the last equation to solve for $x_4$ . Once it is known, the third equation involves the only variable $x_3$ . Once

4 0

3 years ago

A county manager used a representative sample of two populations in the county to determine the number of pounds of trash thrown

taurus [48]

Answer:

its B

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Given the function f(x)=x2+2x, the value of f(4) is

Citrus2011 [14]

Answer:

Step-by-step explanation:

f(x)=x^2+2x

Let x= 4

f(4)=4^2+2*4

= 16 + 8

= 24

5 0

3 years ago

Using suitable property find the product of 99 X 106 Send the solution plz full ASAP

Paladinen [302]

10494 po ang sabot ko

8 0

3 years ago