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2 years ago

Select the correct answer. Solve the following equation by completing the square.

Mathematics

1 answer:

Kisachek [45]2 years ago

5 0

Answer:

A project?

Step-by-step explanation:

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PLEASE HELP! find the inverse matrix

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Answer:

see explanation

Step-by-step explanation:

The inverse of a matrix A = $\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]$ is

$A^{-1}$ = $\frac{1}{ad-bc}$ $\left[\begin{array}{ccc}d&-b\\-c&a\\\end{array}\right]$

If ad - bc = 0 then the matrix has no inverse

A = $\left[\begin{array}{ccc}11&-5\\3&-1\\\end{array}\right]$

ad - bc = (11 × - 1) - (- 5 × 3) = - 11 - (- 15) = - 11 + 15 = 4 , then

$A^{-1}$ = $\frac{1}{4}$ $\left[\begin{array}{ccc}-1&3\\-5&11\\\end{array}\right]$ = $\left[\begin{array}{ccc}-0.25&0.75\\-1.25&2.75\\\end{array}\right]$

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2 years ago

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Answer:

Part A:

Length A=5

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Part B:

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Step-by-step explanation:

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3 years ago

Solve The Equation 15 = 9 - 3a

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2=A hope this helps

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Step-by-step explanation:

Let 3 litres of juice be divided into 5x, 3x and 4x parts.

$\therefore \: 5x + 3x + 4x = 3 \: litres \\ \therefore \: 12x = 3000 \: ml\\ \therefore \: x = \frac{3000}{12} \\ \therefore \: x = 250 \: ml \\ \therefore \: \\ 5x = 5 \times 250 = 1250 \: m = 1.25 \: l \\ 3x = 3\times 250 = 750 \: ml = 0.75 \: l\\ 4x = 4 \times 250 = 1000 \: ml = 1 \: l\\$

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