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3 years ago

14

Prairie dogs ventilate their burrows by building a mound around one entrance, which is open to a stream of air when wind blows f

rom any direction. A second entrance at ground level is open to almost stagnant air. How does this construction create an airflow through the burrow

1 answer:

Finger [1]3 years ago

6 0

Answer:

Step-by-step explanation:

causeit have a hole

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vovangra [49]

Answer:

$\frac{11}{24} \: cups$

Step-by-step explanation:

Please see the attached picture for the full solution.

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3 years ago

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Divide 96m into two part<br>in the ratio of 9:7

fredd [130]

Answer:

54 and 42

Step-by-step explanation:

add 9 and 7

use your answer as a denominator

to find the value for 9 you do 9/16 *96

which will give you 54

then do the same for 7 but replace the 9 with seven

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3 years ago

What is the equation of a line parallel to y=1/2×+6 that passes through (-4,1)

IgorC [24]

keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above

$y = \stackrel{\stackrel{m}{\downarrow }}{\cfrac{1}{2}}x+6\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}$

so we're really looking for the equation of a line whose slope is 1/2 and passes through (-4 , 1)

$(\stackrel{x_1}{-4}~,~\stackrel{y_1}{1})\hspace{10em} \stackrel{slope}{m} ~=~ \cfrac{1}{2} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{1}=\stackrel{m}{ \cfrac{1}{2}}(x-\stackrel{x_1}{(-4)}) \\\\\\ y-1=\cfrac{1}{2}(x+4)\implies y-1=\cfrac{1}{2}x+2\implies y=\cfrac{1}{2}x+3$

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2 years ago

Which graph shows a system of equations with the solution (5, -3)?

Romashka [77]

Answer:

9,9

Step-by-step explanation:

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4 years ago

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Solve the system of linear equations by adding

Ksenya-84 [330]

Answer:

x=-16

Step-by-step explanation:

6x - 2y = 14

-7x + 2y = 2

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3 years ago