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jarptica [38.1K]
3 years ago
6

Owen needed his computer fixed he took it to the repair shop a technician at the store work on it for 5.5 hours and charge him $

70 For parts the total was 702.50 what was the cost of labor per hour
Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0

Answer:7.00

Step-by-step explanation:

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-19=-17+k/5 please show work
EleoNora [17]

Answer:

Step-by-step explanation:

-19=-17+k/5

add 17 to both sides

-2=k/5

multiply by 5 on both sides to get k alone

k=-10

7 0
3 years ago
Read 2 more answers
Write the equation in slope-intercept form and find the equation of a line through the given point (a) parallel and (b) perpendi
skelet666 [1.2K]

keeping in mind that parallel lines have the same exact slope, hmmm what's the slope of 4x - 2y = 3 anyway?  well, let's put it in slope-intercept form firstly.


\bf 4x-2y=3\implies 4x-3=2y\implies \cfrac{4x-3}{2}=y
\\\\\\
\cfrac{4x}{2}-\cfrac{3}{2}=y\implies \stackrel{slope}{2}x-\cfrac{3}{2}=y


a)


so we're looking for a line whose slope is 2 and passes through 2,1.


\bf (\stackrel{x_1}{2}~,~\stackrel{y_1}{1})~\hspace{10em}
slope = m\implies 2
\\\\\\
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-1=2(x-2)
\\\\\\
y-1=2x-4\implies \blacktriangleright y=2x-3 \blacktriangleleft


b)


\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{\stackrel{slope}{2\implies \cfrac{2}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{2}}}
\\\\[-0.35em]
\rule{34em}{0.25pt}


\bf (\stackrel{x_1}{2}~,~\stackrel{y_1}{1})~\hspace{10em}
slope = m\implies -\cfrac{1}{2}
\\\\\\
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-1=-\cfrac{1}{2}(x-2)
\\\\\\
y-1=-\cfrac{1}{2}x+1\implies \blacktriangleright y=-\cfrac{1}{2}x+2 \blacktriangleleft

4 0
3 years ago
Given the following two side lengths of a triangle, what is the largest whole number length
daser333 [38]
(13*13) + (28*28) = 953
square root = 30.8706…
31cm
3 0
2 years ago
PLZ HELP QUICK I NEED HELP 3 ^x−1 = 9 ^x+2
Crazy boy [7]
I believe the answer is
X = -5

3 ^ -4 = 9^-2
Hope this helps!
6 0
3 years ago
Can someone please help me answer this?
sammy [17]

Answer:

Not clear enough

Step-by-step explanation:

please resend the question and make it more clear and readable

8 0
4 years ago
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