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3 years ago

What is the decimal representation of 2/10

Mathematics

2 answers:

7nadin3 [17]3 years ago

4 0

Look at the picture.

$\dfrac{2}{10}=0.2$

ad-work [718]3 years ago

3 0

.2 is the decimal representation of 2/10

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MAVERICK [17]

Answer:

5.5 7

Step-by-step explanation:

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3 years ago

Find the volume of the cylinder.<br> Either enter an exact answer in terms of π or use 3.14 for π

adelina 88 [10]

First you have to use the formula which is r to the second times height times pi
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3 years ago

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Ksju [112]

Answer:

x = 5.56

Step-by-step explanation:

Sin(17) = $\frac{x}{19}$

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Sin(17) * 19 = x

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3 years ago

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Answer:

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3 years ago

2. The alkalinity of a fluid (pH) can be modeled in terms of its hydrogen ion concentration (H+, measured in moles/liter) of the

nataly862011 [7]

Given the equation:

$pH=-log\mleft(H^+\mright)$

You know that a lab technician finds that a sample of fluid has this pH:

$pH=4.5$

Then, in order to find the hydrogen ion concentration of the fluid, you need to follow these steps:

1. Substitute the pH given in the exercise into the equation:

$4.5=-log(H^+)$

Multiply both sides by -1:

$-4.5=\log (H^+)$

2. Solve for:

$H^+$

Remember that, by definition:

$\log _b\mleft(c\mright)=a\Rightarrow b^a=c$

In this case, you can identify that:

$\begin{gathered} a=-4.5 \\ b=10 \\ c=H^+ \end{gathered}$

Hence, substituting values and simplifying, you get:

$\begin{gathered} b^a=c \\ 10^{-4.5}=H^+ \\ H^+=0.00003162278\text{ }\frac{moles}{liter} \end{gathered}$

Therefore, the answer is:

$H^+=0.00003162278\text{ }\frac{moles}{liter}$

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1 year ago