3 years ago

Find two different 2 by 2 matrices a and b such that ab=ba

Mathematics

1 answer:

stiv31 [10]3 years ago

8 0

Let $\mathbf A=\mathbf I$ be the identity matrix. Then pick whatever matrix you like for $\mathbf B$ .

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Serhud [2]

Looks like you don't need help! You got the correct answer!

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3 years ago

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Does someone know what the answer is? Please, help.

natita [175]

Answer:

III

Step-by-step explanation:

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2 years ago

Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equat

Nina [5.8K]

Answer:

Correct choice is D

Step-by-step explanation:

Given the system of two equations:

$\left\{\begin{array}{l}4x+y=8\\6x-9y=12\end{array}\right..$

Fro mthe first equation

$y=8-4x.$

Substitute into the second equation $8-4x$ instead of y:

$6x-9(8-4x)=12.$

Note that $8-4x=-4x+8,$ then the second equation will take look

$6x-9(-4x+8)=12.$

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3 years ago

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-4(d+5)-3d>8 please help i dont need you to explain it only answer please and thank you

Gala2k [10]

Show your work kidddd

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2 years ago

What is 0.8%of $5,700?

EastWind [94]

Answer: 0.8% of 5,700 = <u><em>45.6 </em></u>

Step-by-step explanation:

0.8% × 5,700 =

(0.8 ÷ 100) × 5,700 =

(0.8 × 5,700) ÷ 100 =

4,560 ÷ 100 =

45.6;

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3 years ago

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