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Romashka [77]
3 years ago
11

Calculate mean: 18, 24, 17, 21, 24, 16, 29, 18

Mathematics
2 answers:
tamaranim1 [39]3 years ago
7 0

Answer: 20.88

Step-by-step explanation:

Add up all numbers and divide by how many numbers there are.

First add up:

18+24+17+21+24+16+29+18=167

Now divide by how many numbers there are: in this case, 8.

167/8=20.875

aksik [14]3 years ago
5 0

Answer:

20.875

Step-by-step explanation:

18+24+17+21+24+16+29+18=167/8=20.875

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For second one the answer is 14


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2 years ago
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Calculate the volume of each of the following prisms.
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Answer:

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3 0
2 years ago
URGENT will give brilliant mark For the reaction 2Na + Cl2 ------ 2NaCl, how many grams of sodium chloride can be produced from
SVETLANKA909090 [29]

Answer:

825 g

Step-by-step explanation:

Here's my work:

500g Cl2 l   1mol Cl2  l  2 mol NaCl   l  58.5 g NaCl

                l   71 g Cl2    l  1 mol Cl2      l    1 mol NaCl  

= 823.94  - the rounding can be a little off

The first thing you have to do is convert the 500 g of Cl2 into moles.  So you get the mass of Cl which is 35.5, but Cl is diatomic by itself so you multiply 35.5 x 2 and get 71.   now on the third column you are comparing the mol ratios of the equation.  The equation is 2Na + Cl2 ---> 2NaCl, so you see that there is no coefficient in front of Cl2 so that means there is 1 mol, and then you see that in the product there is a  coefficient of 2 in front of NaCl so that means there is 2 moles.  Then finally you have to convert the moles backs into grams where you just add the masses of Na and Cl .  You multiply across the top  and then divide that number by the bottom row.

6 0
2 years ago
Simplify the following: <br> 8h – 4g + 5g + 2h
Talja [164]

8h - 4g + 5g + 2h \\  \\ (8h + 2h) -(4g - 5g) \\  \\ 10h - ( - g) \\  \\ 10h + g
5 0
3 years ago
What are the real solutions of x squared =225
Gnesinka [82]

The real solutions the equation as given in the task content; x² = 225 are; +25 and -25.

<h3>What are the real solutions of the equation as given in the task content?</h3>

It follows from the task content that the real solutions of the equation as given in the task content can be determined as follows;

x² = 225

x = ± 15

Therefore, the real solutions of the equation are; +25 and -25.

Read more on real solutions of equations;

brainly.com/question/3122484

#SPJ1

3 0
1 year ago
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