2 years ago

Please help! It’s worth 30 points!

Mathematics

2 answers:

jeka57 [31]2 years ago

8 0

Answer:

0.430

Step-by-step explanation:

thank you so much i really appreciate

agasfer [191]2 years ago

7 0

Answer:

Step-by-step explanation:

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Express each of the following radios in the simplest form.

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2 years ago

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3 years ago

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Determine the value(s) of h such that the matrix is the augmented matrix of a consistent linear system. [Start 2 By 3 Matrix 1s

Leni [432]

Answer: h = 9

Step-by-step explanation: A system of linear equations is consistent when it has at least one solution.

The matrix given is:

$\left[\begin{array}{ccc}-15&21&h\\5&-7&-3\end{array}\right]$

Transform this matrix in a row-echelon form:

$\left[\begin{array}{ccc}-15&21&h\\5&-7&-3\end{array}\right]$ $R_{2} = 3R_{2}+R_{1}$ $\left[\begin{array}{ccc}-15&21&h\\0&0&-9+h\end{array}\right]$

For this row-echelon form to have solutions:

-9 + h = 0

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For this system to be consistent: h = 9.

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3 years ago