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Aleks [24]
2 years ago
11

Mrs. Blair believes there is a relationship between the number of minutes students study and their test grades. She asked her hi

story class to list the number of minutes they studied and their test grade. Using the information provided draw a scatterplot.What test grade might a student expect if they studied approximately 95 minutes?X + YA)60B)80C)100D)120
Mathematics
1 answer:
kodGreya [7K]2 years ago
4 0

Answer:

I would say C 80. I'm not fully sure tho.

Step-by-step explanation:

Sorry If I'm late on this or If I'm wrong

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Find the equation of a line passing through (-4,-3) and perpendicular to<br> 3 x + 2 y = 14.
Reil [10]

keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

3x+2y=14\implies 2y=-3x+14\implies y=\cfrac{-3x+14}{2}\implies y = \cfrac{-3x}{2}+\cfrac{14}{2} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{-\cfrac{3}{2}}x+7\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 therefore

\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{\cfrac{-3}{2}} ~\hfill \stackrel{reciprocal}{\cfrac{2}{-3}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{2}{-3}\implies \cfrac{2}{3}}}

so we're really looking for the equation of a line whose slope is 2/3 and passes through (-4 , -3)

(\stackrel{x_1}{-4}~,~\stackrel{y_1}{-3})\qquad \qquad \stackrel{slope}{m}\implies \cfrac{2}{3} \\\\\\ \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}{(-3)}=\stackrel{m}{\cfrac{2}{3}}(x-\stackrel{x_1}{(-4)}) \implies y+3=\cfrac{2}{3}(x+4) \\\\\\ y+3=\cfrac{2}{3}x+\cfrac{8}{3}\implies y=\cfrac{2}{3}x+\cfrac{8}{3}-3\implies y=\cfrac{2}{3}x-\cfrac{1}{3}

3 0
2 years ago
Can someone help me with this quickly pleaseee
Sati [7]

Answer:

≈ 52m^2

Step-by-step explanation:

1)the face of a semicircle: (\pi*r^2)/2

2)the face of a rectangle: 6*5

3)the face of a triangle: (3*5)/2

1)  d=6m r=3m  (3.14*3^2)/2=28.26/2=14.13

2)  6*5=30

3)  (3*5)/2=15/2=7,5

Full surface:  14.13+30+7.5=51.63

answer:  51.63m^2 ≈ 52m^2

7 0
2 years ago
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What is the volume of the triangular prism in the picture? <br> (sorry if the picture is blurry)
Leviafan [203]
Can I tell u the answer
3 0
2 years ago
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Feeding trough is in the shape of a
Alex787 [66]

Step-by-step explanation:

1 1/4

is also 5/4

5/4 * 3 * 1/2 * 40 =

answer in comments

please mark as brainest

3 0
2 years ago
Which statement about these triangles is true
steposvetlana [31]

Answer:

c

Step-by-step explanation:

5 0
3 years ago
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