3 years ago

Describe the number 78 in two different ways

Mathematics

1 answer:

statuscvo [17]3 years ago

3 0

It is a high number and in the tens pop ace is 70

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Please answer my question

Alja [10]

12x^4-4x/ 4
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2 years ago

What is 8+[4+(-9)] ?

fgiga [73]

Answer:

Positive 3

Step-by-step explanation:

you have to add 4 and -9 first and you get -5 then you add that to positive 8 and get 3

7 0

2 years ago

What is the area of the quadrilateral

adell [148]

lsumasAnswer:o que mi

tienedos que lao de rumel npor edes o diviy ldo a laedqude

Step-by-step explanation:

numero de lados por eldivides las medidas y o todasmassu

7 0

2 years ago

Without calculating, would 0.4 + (2 + 0.6) be less than, greater than, or equal to 3? Explain.

Anton [14]

wqual because you round 0.6 to 1 and 0.4 to 0 so 2+1 is 3

4 0

2 years ago

Read 2 more answers

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

makkiz [27]

ok. We are given the following equation:

$ph=-\log (H)$

Where:

$\begin{gathered} P=\text{ alkalinity} \\ H=\text{ hydrogen ion concentration} \end{gathered}$

Since we are asked to determine "H" we will solve for "H" in the equation. To do that we will first multiply both sides by -1:

$-ph=\log (H)$

Now, we will use the following property of logarithms:

$\log _aB=c\rightarrow B=a^c$

Applying the property and having into account that:

$\log (H)=\log _{10}(H)$

We get:

$10^{-pH}=H$

Now we substitute the given value of "pH = 4.5":

$10^{-4.5}=H$

Solving the operation:

$0.000032=H$

Therefore, the hydrogen ion concentration of the fluid is 0.000032

7 0

1 year ago