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2 years ago

Definition of a proton

2 answers:

6 0

Proton is a sub atomic particle present in a nucleus with a positive charge .it gives an electronic configuration of an atom.

Zigmanuir [339]2 years ago

3 0

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.

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Which expression is equivalent to (3/x − 2 − 5) / (2 − 4/x − 2)?

Tresset [83]

Answer:

last option is correct

Step-by-step explanation:

$\frac{\frac{3}{x-2} -5}{2-\frac{4}{x-2} } = \frac{3-5x+10}{2x-4-4} = \frac{13-5x}{2x-8}$

3 0

2 years ago

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I do not know the answer to this equation √56245

snow_lady [41]

Answer: 237.160283353

Step-by-step explanation:

4 0

3 years ago

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Identify the ellipses, represented by equations, whose eccentricities are less than 0.5

ozzi

Answer:

See explanation

Step-by-step explanation:

Hello, we cannot see the ellipse equations.

The eccentric of an ellipse is given by:

$e = \frac{c}{a}$

Assuming the equations are:

$\frac{ {x}^{2} }{25} + \frac{ {y}^{2} }{16} = 1$

Then a²=25 and b²=16

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = 25 - 16$

${c}^{2} = {3}^{2}$

$c = 3$

The eccentricity is:

$e = \frac{3}{5} = 0.6$

If the ellipse has equation,

$\frac{ {x}^{2} }{ {5}^{2} } + \frac{ {y}^{2} }{ {3}^{2} } = 1$

then the this time, we have a=5 and b=3.

This means that:

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = {5}^{2} - {3}^{2}$

${c}^{2} = {4}^{2}$

$c = 4$

$c = \frac{4}{5} = 0.8$

3 0

3 years ago

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Which of the numbers below is the next number in the following pattern?<br> 2,-3,4,-5,

GarryVolchara [31]

Answer:

Step-by-step explanation:

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2 years ago

10) The scale of a map is 1 inch represents 4 miles. How many miles does 0.5 inches represent?

scoundrel [369]

Answer:

2 miles

Step-by-step explanation:

1 in=4miles

0.5 in=2miles

so divide by two on each side

7 0

2 years ago

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