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2 years ago

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Mathematics

1 answer:

igomit [66]2 years ago

8 0

Answer:

-5

Step-by-step explanation:

-5 is the first point on the y axis the line crosses

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What is the volume of this prism?<br><br> 23.9<br> 47.7<br> 9.0<br> 4.5

anyanavicka [17]

Your answer would be 23.85 but I presume they rounded up so it would be 23.9

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2 years ago

Solve the following system of equations. Write each of your answers as a fraction reduced to lowest terms. In other words, write

morpeh [17]

Answer:

x = 57/28

y = -95/84

z = 97/168

Step-by-step explanation:

Use the application in the next link: https://www.zweigmedia.com/RealWorld/tutorialsf1/scriptpivotold.html

Start with the expanded array:

$\left[\begin{array}{cccc}1&5&8&1\\3&2&2&5\\-2&-7&2&5\\\end{array}\right]$

then using the tool provided, make row operations until you find the solution:

r2 = r2-3r1

$\left[\begin{array}{cccc}1&5&8&1\\0&-13&-22&2\\-2&-7&2&5\\\end{array}\right]$

r3 = r3+2r1

$\left[\begin{array}{cccc}1&5&8&1\\0&-13&-22&2\\0&3&18&7\\\end{array}\right]$

r2 = r2*(-1/13)

$\left[\begin{array}{cccc}1&5&8&1\\0&1&22/13&-2/13\\0&3&18&7\\\end{array}\right]$

r1 = r1- r2*5

$\left[\begin{array}{cccc}1&0&-6/13&23/13\\0&1&22/13&-2/13\\0&3&18&7\\\end{array}\right]$

r3 = r3+ r2*-3

$\left[\begin{array}{cccc}1&0&-6/13&23/13\\0&1&22/13&-2/13\\0&0&168/13&97/13\\\end{array}\right]$

r3 = r3*13/168

$\left[\begin{array}{cccc}1&0&-6/13&23/13\\0&1&22/13&-2/13\\0&0&1&97/168\\\end{array}\right]$

r2 = r2- r3*22/13

$\left[\begin{array}{cccc}1&0&-6/13&23/13\\0&1&0&-95/84\\0&0&1&97/168\\\end{array}\right]$

r2 = r2+ r3*6/13

$\left[\begin{array}{cccc}1&0&0&57/28\\0&1&0&-95/84\\0&0&1&97/168\\\end{array}\right]$

Here you have a reduced array an therefore the answers to each variable are on each row:

$\left[\begin{array}{c}x\\y\\z\end{array}\right]$

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3 years ago

Which of the following is true about the expression sqrt3*sqrt2

Mars2501 [29]

Answer:

<h2>Option B is the right answer.</h2>

Step-by-step explanation:

$\sqrt{3} , \sqrt{2}$ are two irrational numbers, that is, they can not be shown as the fraction of two integers.

$\sqrt{3} \times\sqrt{2} = \sqrt{6}$

$\sqrt{6}$ is also a irrational number, since it also can not be represented as the fraction of integers.

Hence, the given expression represent the product of two irrational number and is equivalent to an irrational number.

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3 years ago

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The point (1, –5) is reflected across the y-axis. A coordinate plane. What are its new coordinates?

luda_lava [24]

<h3>Answer: Choice C. (-1, -5)</h3>

Explanation:

The reflection rule we use is

$(x,y) \to (-x, y)$

when we want to reflect over the y axis. The x coordinate flips from positive to negative, or vice versa, while the y coordinate stays the same.

Therefore, $(1, -5) \to (-1, -5)$

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3 years ago

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A farmer takes 8 days to cultivate a plot of land i ha in area. What area

Kaylis [27]

More information is needed

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3 years ago

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