When a matrix is multiplied by its inverse the result will be the identity matrix. If we multiply two matrix with the same size, the resulting matrix will have the same dimension.

Therefore, if we multiply the matrices X and Y we will get a 2x2 identity matrix, as follows:

$\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right]$

7 0

4 years ago

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Find the quotient. Simplify completely. Please show work.

nadya68 [22]

1. 8/9 ÷ 4/9 is done by inverting the divisor (4/9) and then multiplying:

(8/9)(9/4) = 8/4 = 2 (answer)

2. 1/3 ÷ 6 is done similarly: (1/3)(1/6) = 1/18 (answer)

3. 4 ÷ 1/5 = 4 * 5 = 20 (answer)

4. 7 1/2 ÷ 1/4 = (15/2)(4/1) = 30 (answer)

8 0

4 years ago

How do I get better at algebra 2

Mrrafil [7]

To get better you need to practice, study, and work hard.

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If you need help i can hep you

4 0

3 years ago

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1/128 = 2^(5x+3) anybody know what x is

Jet001 [13]

Answer:

${2}^{(5x + 3)} = \frac{1}{128} \\ {2}^{(5x + 3)} = \frac{1}{ {2}^{7} } \\ {2}^{(5x + 3)} = {2}^{ (- 7)} \\ 5x + 3 = - 7 \\ 5x = - 7 - 3 \\ 5x = - 10 \\ x = \frac{ - 10}{5} \\ \boxed{x = - 2}$

x = -2 is the right answer.

5 0

3 years ago

Can a polygon have four sides and three angles￼

Can a polygon have four sides and three angles