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JulijaS [17]
3 years ago
8

Find the area of the following figure. Round to the nearest tenth

Mathematics
2 answers:
UkoKoshka [18]3 years ago
6 0

Answer:

27yd

Step-by-step explanation:

7 times 7.7 = 53.9

53.9/2 = 26.95 rounded = 27

poizon [28]3 years ago
4 0

Answer:

27.0yd^2 (nearest tenth)

Step-by-step explanation:

area of triangle = 1/2 x base x height

A = 1/2 x 7.7 x 7

A = 26.95

A = 27.0 (nearest tenth)

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Here is how I completed the problem:

I started by creating a ratio:

\frac{x}{0.18} + \frac{360}{0.10} = \frac{x+360}{0.15}

<em>Where 'x' is the desired amount of the 18% solution of sulfuric acid. 

</em>From here, I solved for 'x':
<em>
</em>\frac{0.10x}{0.018} + \frac{360(0.18)}{0.018} = \frac{x+360}{0.15}
\frac{0.10x}{0.018} + \frac{64.8}{0.018} = \frac{x+360}{0.15}
\frac{0.10x+64.8}{0.018} = \frac{x+360}{0.15}
0.15(0.10x+64.8) = 0.018(x+360)
0.015x+9.72 = 0.018x+6.48
0.003x = 3.24
x = 1080

∴You will need to add 1080ml of 18% Sulfuric Acid in order to obtain a 15% solution.
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3 years ago
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Alex73 [517]

Answer:

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Answer:

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Hope i help <span>42/2= 21 
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