3 years ago

NEED HELP ASAP!!! DUE BY 5

Mathematics

1 answer:

Paraphin [41]3 years ago

5 0

Answer:

86m^2

Step-by-step explanation:

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530.66 cm²

Step-by-step explanation:

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2 years ago

What is the slope and y-intercept this table?

svlad2 [7]

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3 years ago

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Hello! Question.

Bumek [7]

If I’m analyzing the question correct, you would pay 912 in total

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3 years ago

A radio station had 60 tickets to a concert. They gave away 2 times as many tickets to listeners as to employees. How many ticke

Nataly_w [17]

Answer:

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3 years ago

What is the determinant of the coefficient matrix of this system? <br> 4x-3y=-8 <br> 8x-3y=12

gladu [14]

The coefficient matrix is build with its rows representing each equation, and its columns representing each variable.

So, you may write the matrix as

$\left[\begin{array}{cc}\text{x-coefficient, 1st equation}&\text{y-coefficient, 1st equation}\\\text{x-coefficient, 2nd equation}&\text{y-coefficient, 2nd equation} \end{array}\right]$

which means

$\left[\begin{array}{cc}4&-3\\8&-3\end{array}\right]$

The determinant is computed subtracting diagonals:

$\left | \left[ \begin{array}{cc}a&b\\c&d\end{array}\right]\right | = ad-bc$

So, we have

$\left | \left[\begin{array}{cc}4&-3\\8&-3\end{array}\right] \right | = 4(-3) - 8(-3) = -4(-3) = 12$

8 0

3 years ago