3 years ago

WILL GIVE BRAINLIESTTT!!!! PLS HELP

Mathematics

1 answer:

Kaylis [27]3 years ago

4 0

7/30 x 100 = approx 23.3%

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Question 8

sasho [114]

we are given

system of equations

First equation is

$3x-2y=31$

Second equation is

$3x+2y=-1$

now, we can find augmented matrix

$A=\begin{pmatrix}3&-2&31\\ 3&2&-1\end{pmatrix}$

now, we can change it into reduced row echelon form

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step-2:add -3 times the 1st row to the 2nd row

$A=\begin{pmatrix}1&-2/3&31/3\\ 0&4&-32\end{pmatrix}$

step-3:multiply the 2nd row by 1/4

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step-4: add 2/3 times the 2nd row to the 1st row

$A=\begin{pmatrix}1&0&5\\ 0&1&-8\end{pmatrix}$

so, we get

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4 years ago

Read 2 more answers

Can someone please g<br> find the length X.

Naily [24]

Answer:

x = 7

Step-by-step explanation:

the 2 is doubled so the 3.5 has to be doubled as well

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3 years ago