3 years ago

What is the value of the 9 3/4- 2 1/5 +1/2

Mathematics

1 answer:

vazorg [7]3 years ago

5 0

Answer:

93 will the answer

Step-by-step explanation:

yes htey are good

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The hydrogen ion concentration (h+) in a certain cleaning compound is (h+)=3.2x10^-11 use the formula ph=-log(h+) to find the pH

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Answer:

The $pH$ of the clean compound is approximately 10.495.

Step-by-step explanation:

If the cleaning ion concentration of the cleaning compound is $[H^{+}] = 3.2\times 10^{-11}$ , then the $pH$ , no unit, of the compound is:

$pH = -\log_{10} [H^{+}]$ (1)

$pH = -\log_{10} (3.2\times 10^{-11})$

$pH = -\log_{10} 3.2 - \log_{10} (10^{-11})$

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$pH = -\log_{10} 32 +12$

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3 years ago

I have a ring for each finger of both hands. I want to buy 4 more rings. How many rings will I have then?

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In the diagram below, If angle 53°,what is the angle of CD

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I need this answer too can someone please help us out with the right answer ?!

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3 years ago

I don’t know this and need help with the answer

ki77a [65]

9+10=21 that is the answer

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