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NeX [460]
2 years ago
11

What is 3^-2 as a fraction?

Mathematics
2 answers:
Dennis_Churaev [7]2 years ago
4 0

Answer:

It is joe mama

Step-by-step explanation:

pav-90 [236]2 years ago
4 0

Answer:

1/3^2 or 1/9

Step-by-step explanation:

Just think of the negative symbol in front of the exponent as a 1/ and then just add the exponent to the base.

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8 0
3 years ago
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Help me with this please
Xelga [282]
Alright, so for every addition or subtraction (without the whole thing being in parenthesis and multiplied by something) sign, there is 1 term to the right of it and 1 term to the left of it. However, we have to make sure not to overlap - for example, m is only 1 term - it can't be counted as 2 since it's to the right of a - and to the left of a +. Our terms are therefore 2m²n, 2mn², m, 3n, and 9
6 0
2 years ago
The box plot shows the number of years during which 12 teams have participated in a rugby tournament:
Anit [1.1K]
The answer is

B. 3 schools

100% Verified!

Hope This Helps!:)
3 0
2 years ago
Which of the following represents a 1.00 M (M = mol/dm3) aqueous solution of glucose (C6H12O6)?
tino4ka555 [31]

Answer:

Option C. 90.0 g glucose per 500 cm3 water

Step-by-step explanation:

1.00 M (mol/dm3) aqueous solution of glucose (C6H12O6) means that 1 mole of glucose is dissolved in 1dm³ (1000cm³) of water.

The concentration of a substance is defined as the mole of solute per unit volume of solvent (water) in dm³.

Option A is wrong since it state: 180g of C6H12O6 per 1000cm³ of solution. Concentration is always expressed as per 1000cm³ or dm³ of water.

For option B:

We shall determine the number of mole of C6H12O6, followed by the concentration.

This is illustrated below:

Molar mass of C6H12O6 = (12x6) + (12x1) + (16x6) = 180g/mol

Mass of C6H12O6 = 10g

Mole = Mass /Molar Mass

Mole of C6H12O6 = 10/180 = 0.056 mole.

Volume of water = 10cm³ = 10/1000 = 0.01dm³

Concentration = mole /Volume

Concentration = 0.056/0.01 = 5.6mol/dm³

Option B is wrong

For option C:

We shall determine the number of mole of C6H12O6, followed by the concentration.

This is illustrated below:

Molar mass of C6H12O6 = 180g/mol

Mass of C6H12O6 = 90g

Mole = Mass /Molar Mass

Mole of C6H12O6 = 90/180 = 0.5mole

Volume of water = 10cm³ = 500/1000 = 0.5dm³

Concentration = mole /Volume

Concentration = 0.5/0.5 = 1mol/dm³

Option C is correct.

For option D is wrong as well as it states 0.1g of C6H12O6 per cm³ of solution. Concentration is always per 1000cm³ or dm³ of water.

From the above illustrations, option C is the correct answer.

7 0
3 years ago
Michelle and her friends wondered who had the most pop albums in their music collection. She recorded the information below: Mus
Ira Lisetskai [31]

Answer:

Michelle

Step-by-step explanation:

Given the data:

S Name No of Pop Albums Total No of Albums Michelle 33 60

Sasha 36 78

Kat 40 89

Monica 24 59

Percentage of pop Albums:

(Number of pop album / total number of albums) * 100%

Michelle :

(33 /60) * 100% = 55%

Shasha:

(36 /78) * 100% = 46.15%

Kat:

(40 / 89) * 100% = 44.94%

Monica :

(24 / 59) * 100% = 40.67%

Hence, Michelle has the greatest percentage of pop Albums

8 0
2 years ago
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