2 years ago

If an atom has 5 protons, 7 neutrons and 5 electrons what is the mass number of the atom?

Mathematics

1 answer:

Mariana [72]2 years ago

5 0

Answer:

7+5=12

Step-by-step explanation:

To calculate the mass number of an atom, you have to add the protons and the neutrons. We have 7 neutrons and 5 protons, so your mass number would be 12. Let me know if you have any further questions. :)

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In the floor tile pattern, the figure is a square and the two triangles are congruent.

Licemer1 [7]

Answer:

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Step-by-step explanation:

Since it is a square you can use the Pythagorean theorem (a²+b²=c²) by filling in what you know. a²=5 and b²=5 so you have 5²+5²=c². This simplfies to 25+25=c². Now you simplify again to get 50=c². Finally you have to square root everything because the equation can't end in c², it has to be the most simplified it can be. This equals ≈7.1

8 0

2 years ago

Solve the quadratic equation.......12x^2+178x-40

Nina [5.8K]

Answer:

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Step-by-step explanation:

Hope this helps!