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3 years ago

Please help me solve the problem

Mathematics

1 answer:

zavuch27 [327]3 years ago

3 0

Answer:

f(2) = 7/4

Step-by-step explanation:

$f(x) = \frac{2x + 7 - {x}^{2} }{4} \\ f(2) = \frac{2(2) + 7 - {2}^{2} }{4} \\ f(2) = \frac{4 + 7- 4}{4} \\ f(2) = \frac{7}{4}$

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Answer:

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Step-by-step explanation:

The answer should be 18 vol. bc it said what is the biggest gift she can send her grandma

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3 years ago

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Please help I think its 16 but not sure

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Answer:

I think its 12 to this question

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In a metal fabrication process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are n

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Answer:

95% Confidence interval: (14.4537 ,15.1463)

Step-by-step explanation:

We are given the following in the question:

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Sample mean, $\bar{x}$ = 14.8 feet

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Putting the values, we get,

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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.

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Answer:

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