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gtnhenbr [62]
3 years ago
15

Solve 4/√7-1 +2/√7+1

Mathematics
2 answers:
vekshin13 years ago
7 0

Answer:

<h3>\frac{4}{\sqrt{7}}-1+\frac{2}{\sqrt{7}}+1</h3>

=\frac{4}{\sqrt{7}}+\frac{2}{\sqrt{7}}-1+1

\frac{4}{\sqrt{7}}+\frac{2}{\sqrt{7}}=\frac{6\sqrt{7}}{7}

\frac{6\sqrt{7}}{7}-1+1

-1+1=0

=\frac{6\sqrt{7}}{7}

<u>OAmalOHopeO</u>

Goshia [24]3 years ago
5 0

Answer:

Answer is (6\sqrt{7} +2)/6

Step-by-step explanation:

The question isn't very clear, so I'm gonna assume the denominator is  \sqrt{7}-1 and \sqrt{7}+1

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Dimensional analysis: How many atoms are in a kilogram of silver, if there are 6.02 x 10^23 atoms per mole and silver weighs 107
kondor19780726 [428]

Answer:

5.58×10²⁴ atoms.

Step-by-step explanation:

From the question given above, the following data were obtained:

1 mole of silver = 107.9 g

Number of atoms in 1 mole of silver = 6.02×10²³ atoms.

Number of atoms in a kilogram of silver =.?

Next, we shall convert 1 kg of silver to grams (g). This can be obtained as follow:

1 kg = 1000g

Therefore, 1 kg of silver is equivalent to 1000g.

Finally, we shall determine the number of atoms in 1 kg (i.e 1000 g) of silver as follow:

107.9 g of silver contains 6.02×10²³ atoms.

Therefore, 1000 g of silver will contain = (1000 × 6.02×10²³) / 107.9 = 5.58×10²⁴ atoms.

Thus, a kilogram of silver contains 5.58×10²⁴ atoms.

6 0
3 years ago
Can you help me find the area?
mamaluj [8]

Answer: 9m^{2}

Step-by-step explanation:

3m × 3m = 9m

8 0
3 years ago
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In a football tournament, each team plays exactly 19 games.
S_A_V [24]

At the end of the tournament, team Olympus have tied for 13,10,7,4,1 times

<h3>What is inequality?</h3>

A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

According to question

In a football tournament, each team plays exactly 19 games.

Points for every win (w) = 3

Points for every tie (t)= 1

Points for every loose = 0

Olympus got a total of 28 points

i.e  3w + t = 28 ---------(1)

And each team plays  19 games

T + W  ≤  19 --------------(2)

and T , W ≥ 0

from equation (1) and (2)

=> 2W  ≥  9

=> W ≥ 4.5  

( match can be won in integers only )

=> W  ≥  5  

W       T        Loose

5        13           1

6        10           3

7         7            5

8         4            7

9          1            9    

Hence, Olympus have tied for 13,10,7,4,1 times

To know more about Inequality here :

brainly.com/question/15137133

# SPJ2

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2 years ago
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4 years ago
Describe a situation that can be represented by the integer 12.
jeka57 [31]

Step-by-step explanation:

Integers are positive whole numbers, negative whole numbers and zero.

Positive whole numbers are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and so on.

Negative whole numbers are: -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, and so on.

Together with zero, they are all called integers.

There are many situations that can be represented by the integer 12.

Examples are:

- How many shirts make a dozen?

* 12 shirts make a dozen

- How many months make one year?

* 12 months make one year.

5 0
3 years ago
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