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3 years ago

Please help! Correct answer only!

Mathematics

2 answers:

Sonja [21]3 years ago

8 0

Answer:

<em>Probability ≈ 0.1071</em>

Step-by-step explanation:

Consider steps below;

$Total Possible Outcomes - 8C5,\\\\8! / 5! ( 8 - 5 )!,\\1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 / ( 1 * 2 * 3 * 4 * 5 )( 1 * 2 * 3 ),\\\\6 * 7 * 8 / 6 = Combinations - 56,\\\\$

$Number Of Outcomes - 6C5,\\\\6! / 5! ( 6 - 5 )!,\\1 * 2 * 3 * 4 * 5 * 6 / ( 1 * 2 * 3 * 4 * 5 ) ( 1 ),\\720 / 120 * 1,\\\\Outcomes - 6$

$Conclusion ; Solution - 6 / 56 = ( About ) 0.1071\\Hope That Helps!$

<em>Solution; Probability ≈ 0.1071</em>

drek231 [11]3 years ago

5 0

Answer:

The probability is 0.107

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The maximum contamination level of arsenic ion in a water system is 0.050 parts per million. If the arsenic is present as AsCl3,

zhenek [66]

Answer:

mass AsCl₃ in 8.2x10⁵ L = 99.2gAsCl₃

Step-by-step explanation:

Let's remember that 0.05 ppm (parts per million) would be write terms of mg/L. We have 0.05 mg/L, that is a concentration unit.

First of all we need to find the g/L of AsCl₃ present in water.

$0.05 \frac{mgAs}{L} x \frac{1molAs}{74.92*10^{3}mgAs} x \frac{1molAsCl_{3}}{1molAs} x \frac{181.2gAsCl_{3}}{1molAsCl_{3}} = 1.209*10^{-4}\frac{gAsCl_{3}}{L}$

Now, we just need to multiply it by 8.2 x 10⁵ L to determine the mass of AsCl₃ present in that volume.

Finally we have:

$1.209*10^{-4} \frac{gAsCl_{3}}{L} 8.2*10^{5} L = 99.2 gAsCl_{3}$ .

Have a nice day!

6 0

4 years ago

What is the 48th term of the arithmetic sequence with this explicit formula?

mariarad [96]

Option B

48th term of arithmetic sequence is -152

<h3><u>Solution:</u></h3>

Given that a arithmetic sequence has explict formula,

$a_n = -11 + (n - 1)(-3)$

To find: 48th term of the arithmetic sequence

The nth term of arithmetic sequence can be found by substituting the required value of n in the explict formula

So 48th term of the arithmetic sequence can be found by substituting n = 48 in explict formula

$a_n = -11 + (n - 1)(-3)$

Plug in n = 48

$a_{48} = -11 + (48 - 1)(-3)$

On solving we get,

$a_{48} = -11 + (47)(-3)\\\\a_{48} = -11 - 141\\\\a_{48} = - 152$

Thus 48th term of arithmetic sequence is -152

4 0

3 years ago

Plzzz help don’t understand plz explain

kherson [118]

So the easiest way to do this problem is to put your equation in linear form, meaning y = the rest of the equation.

I'm going to show the work to do that below:

2x - y = 4

-2x -2x (Here I am subtracting 2x)

- y = 4 - 2x

(-1)(- y) = (-1)(4 - 2x) (Now I'm multiplying both sides by -1 to make y positive)

y = 2x - 4 (And just for neat purposes I'm going to put the 2x in front of the 4)

Now you have your equation ( y=2x-4 ) and you're ready to put it on the points of your graph.

Start on the point (0, -4) to represent the y axis.

y = 2x - 4

Then, your rise (2) over your run (1)

so your coordinates for a line will be:

(0, -4) (-2, 1) (1, 0)

You only need to plot these three to connect your line.

I appologize for my lack of visuals i understand this might be confusing, however if you have any further questions feel free to let me know!

8 0

4 years ago

ANSWER THESE FAST PLZ

LuckyWell [14K]

Answer:

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8 0

3 years ago

Solve each system of equation algebraically<br> y=x+2<br> y=-3x

algol [13]

Try this solution:
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4 0

3 years ago

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