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9 months ago

Find the LCM of 121, 280 and 550.

Mathematics

1 answer:

arsen [322]9 months ago

4 0

Answer: 78

Step-by-step explanation: 78

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The data from 200 endothermic reactions involving sodium bicarbonate are summarized as follows: calculate the probability mass f

In-s [12.5K]

Given the table below which contains data from 200 endothemic reactions involving sodium bicarbonate:

$\begin{tabular}
{|c|c|}
Final Temperature Conditions&Number of Reactions\\[1ex]
266 K&48\\
271 K&60\\
274 K&92
\end{tabular}$

We find the probability distribution function as follows:

Let X denote the final temperature, then

 $P(X = 266) = \frac{48}{200} =0.24\\ \\ P(X = 271) = \frac{60}{200} =0.3\\ \\ P(X = 274) = \frac{92}{200} =0.46$

8 0

3 years ago

What are the numbers of pi \pi help due Friday

ohaa [14]

Answer: 3.14285714.....

Step-by-step explanation:

pi is $\dfrac{22}{7}$

$.\quad \underline{\ 3.14285714}\\.\ 7)22.0000000\\.\ \ \underline{-21}\\.\qquad 10\\.\qquad \underline{- 7}\\.\qquad\ \ 30\\.\quad\ \ \ \underline{-28}\\.\qquad \ \ \ 20\\.\quad\ \quad \underline{-14}\\.\qquad \quad \ \ 60\\.\qquad \quad \underline{-56}\\.\qquad \qquad \ 4$

Thiis is a non-terminating and non-repeating decimal.

8 0

2 years ago

Read 2 more answers

43/21 decimal rounded to the nearest hundredth

Step2247 [10]

Answer:

2.05

Step-by-step explanation:

4 0

2 years ago

Beth had 1 yard of ribbon she used 1/4 yard for a project she wants to divide the rest into 1/8 yard pieces

Lesechka [4]

She'll have 6/8 yard of ribbon left

3 0

2 years ago

Read 2 more answers

Jimmy was supposed to multiply a certain number by 43 but by mistake he multiplied that number by 34 as a result his answer was

vredina [299]

Answer:

345

Step-by-step explanation:

We can solve this problem by two equations. Our variables will be the following:

$x$ is the amount to be multiplied

and $y$ is the amount that should be obtained by multiplying by 43

Thus our first equation is:

$43x=y$

But the problem tells us that there was an error and the number $x$ was multiplied by 34, so the result failed by 3105, thus the second equation is as follows:

$34x=y-3105$

By multiplying the quantity by 34, an amount is obtained that differs from 3105 from what it would have been obtained if multiplied by 43.

Now we are going to replace the first equation in the second one ( $y=43x$ ):

$34x=43x-3105$

And clear to find x:

$3105=43x-34x\\3105=9x\\\frac{3105}{9}=x\\345=x$

The number that jimmy was supposed to multiply by 43 is 345.

6 0

2 years ago