3 years ago

Tanya drove 3 1/2 hours and used 1/3 tank of gas. For how long could Tanya drive using 1/2 tank of gas?

1 answer:

7 0

She could drive for 10.5 hours with a full tank of gas before running out
or she could drive another 7 hours with her current gas ammount

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What is 7.884 rounded to the nearest hundredth

Korvikt [17]

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The Answer is <u><em>7.88</em></u>

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8 0

3 years ago

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What is the approximate distance between the points (-3, -4) and (-8, 1) on a coordinate grid

tatyana61 [14]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}
\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ -3 &,& -4~) 
% (c,d)
&&(~ -8 &,& 1~)
\end{array}\\\\\\ % distance value
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
d=\sqrt{[-8-(-3)]^2+[1-(-4)]^2}\implies d=\sqrt{(-8+3)^2+(1+4)^2}
\\\\\\
d=\sqrt{25+25}\implies d=\sqrt{2\cdot 25}\implies d=\sqrt{2\cdot 5^2}\implies d=5\sqrt{2}$