_Pb + _ H3PO4 → H2 + _Pb3(PO4)

Mathematics

1 answer:

AlladinOne [14]2 years ago

5 0

Read method 2 of the article to understand how to do it:

https://www.wikihow.com/Balance-Chemical-Equations

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mihalych1998 [28]

$\sqrt{28}$
It is in between
$\sqrt{25}$
And
$\sqrt{36}$
There for it is in between 5 and 6
Additionally, it is closer to root 25, meaning that it is closer to 5

Rounded to the nearest hundredth is

5.29

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3 years ago

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2 years ago

Typing errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but inc

nordsb [41]

Answer:

a) X is binomial with n = 10 and p = 0.3

Y is binomial with n = 10 and p = 0.7

b) The mean number of errors caught is 7.

The mean number of errors missed is 3.

c) The standard deviation of the number of errors caught is 1.4491.

The standard deviation of the number of errors missed is 1.4491.

Step-by-step explanation:

For each typing error, there are only two possible outcomes. Either it is caught, or it is not. The probability of a typing error being caught is independent of other errors. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$