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3 years ago

Please help me fast and show all your work please thx

Mathematics

2 answers:

Dafna11 [192]3 years ago

8 0

Answer:

Step-by-step explanation:

$Area=\frac{1}{2}*(8+5)*2\\\\=\frac{1}{2}*13*2\\\\=13mm^{2}$

olga_2 [115]3 years ago

4 0

Answer:

Step-by-step explanation:

1/2x(8+5)x2

1/2×13×2

=13

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write the equation of a line that has a slope of-3 and passes through the point(1.25,4)use the drop-down menus to select the app

professor190 [17]

Answer:

Step-by-step explanation:

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1 year ago

I could use some more help

kherson [118]

Answer:

$\left[\begin{array}{ccc}-30&22&8\\-4&-4&16\\30&-28&18\end{array}\right]$

Step-by-step explanation:

Given

$A = \left[\begin{array}{ccc}-1&9&2\\10&-10&2\\-5&6&-5\end{array}\right]$

$B = \left[\begin{array}{ccc}7&-1&-1\\6&-4&-3\\-10&10&-7\end{array}\right]$

Required

2A - 4B

To solve 2A - 4B, we first multiply matrix A by 2 and matrix B by 4

So, if

$A = \left[\begin{array}{ccc}-1&9&2\\10&-10&2\\-5&6&-5\end{array}\right]$

$2A = 2 *\left[\begin{array}{ccc}-1&9&2\\10&-10&2\\-5&6&-5\end{array}\right]$

$2A = \left[\begin{array}{ccc}-2&18&4\\20&-20&4\\-10&12&-10\end{array}\right]$

$B = \left[\begin{array}{ccc}7&-1&-1\\6&-4&-3\\-10&10&-7\end{array}\right]$

then

$4B = 4*\left[\begin{array}{ccc}7&-1&-1\\6&-4&-3\\-10&10&-7\end{array}\right]$

$4B = \left[\begin{array}{ccc}28&-4&-4\\24&-16&-12\\-40&40&-28\end{array}\right]$

So; 2A - 4B becomes

$\left[\begin{array}{ccc}-2&18&4\\20&-20&4\\-10&12&-10\end{array}\right] - \left[\begin{array}{ccc}28&-4&-4\\24&-16&-12\\-40&40&-28\end{array}\right]$

$\left[\begin{array}{ccc}-2-28&18-(-4)&4-(-4)\\20-24&-20-(-16)&4-(-12)\\-10-(-40)&12-40&-10-(-28)\end{array}\right]$

$\left[\begin{array}{ccc}-30&18+4&4+4\\20-24&-20+16&4+12\\-10+40&12-40&-10+28\end{array}\right]$

$\left[\begin{array}{ccc}-30&22&8\\-4&-4&16\\30&-28&18\end{array}\right]$

Hence, 2A - 4B is equivalent to

$\left[\begin{array}{ccc}-30&22&8\\-4&-4&16\\30&-28&18\end{array}\right]$

3 0

2 years ago

Compare your response to the sample response above. What did you include in your explanation? a reference to the horizontal-line

Papessa [141]

Answer: They're all correct, just did it.

Step-by-step explanation:

8 0

3 years ago

Estimit of 612 times 87 pleaseeeee

ANEK [815]

54900 not very hard just do 610 by 90

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2 years ago

Read 2 more answers

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skad [1K]

This is a question related to Science dear!

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3 years ago

Please help me fast and show all your work please thx ​

Please help me fast and show all your work please thx