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andre [41]
3 years ago
8

Hiram drove 15 miles in 12 minutes. If he

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
8 0
Since distance equals speed times time (d = st), we have

t = d/s

where d = 120 miles and s = 15 miles per hour

t = d / s
t = 120 / 15
t = 8

It will take 8 hours to drive 120 miles at a speed of 15 miles per hour.
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Mr. Yueng graded his students’ math quizzes.
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x = \sqrt [3] {22} = 2.8020

ANswer:

The solution to the equation is x = \sqrt [3] {22} = 2.8020

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The line passing through the points (-7,4) and (-23,y) is parallel to a line that has a slope of -5/8. What is the value of y?
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Two lines that are parallel to each other, will have the same slope.

so if this line is parallel to another with a slope of -5/8, the slope of this line is also -5/8 then.  We also know that it passes through -7, 4 and -23, y, let's do some checking.

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
&({{ -7}}\quad ,&{{ 4}})\quad 
%   (c,d)
&({{ -23}}\quad ,&{{ y}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{y-4}{-23-(-7)}\implies \cfrac{y-4}{-23+7}
\\\\\\
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\\\\\\
y=\cfrac{112}{8}\implies y=14
3 0
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