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My name is Ann [436]
3 years ago
10

Perform the indicated row operations

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
4 0

Answer:

\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}

Step-by-step explanation:

Given matrix is,

\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & 3 & -2 & 5\\ 0 & 10 & 8 & 2\end{bmatrix}

Operations performed,

-10R₂ → R₂

\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 10 & 8 & 2\end{bmatrix}

3R₃ → R₃

\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}

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What is the answer to y-2x=2
OleMash [197]
Y - 2x = 2 ....put in y = mx + b form
y = 2x + 2

In y = mx + b form, the slope will be in the m position and the y intercept will be in the b position.

y = 2x + 2.....so we have a slope(m) of 2, and a y int (b) = (0,2)

the x intercept can be found by subbing in 0 for y and solving for x
0 = 2x + 2
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x = -2/2
x = -1......so the x int is (-1,0)

go ahead and plot ur intercepts....(-1,0) and (0,2)......and since ur slope is 2, start at (-1,0) and go up 2 spaces and to the right 1 space, then up 2 and to the right 1........thats ur line and it crosses the y axis at (0,2)


7 0
3 years ago
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How do you subtract negative numbers using counters
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Answer:

by adding counters to the total

3 0
3 years ago
so if i have 2 brands of fruit snacks and one of them costs 48.60 and the other brand is 40.15 which brand cost less per pound
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4 0
3 years ago
Evaluate 0.53n + 5 when n= 3 and when n= -3
vampirchik [111]

Answer:

6.59 and 3.41

Step-by-step explanation:

To evaluate, substitute n for each of the given values.

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4 0
3 years ago
R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)}
vagabundo [1.1K]
<h3>Answer:   -3, -1, 1</h3>

Explanation:

The domain is the set of all allowed x values in a relation. We simply list each unique x coordinate of the (x,y) points given to form the domain.

3 0
2 years ago
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