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2 years ago

if a atom has 12 positively charged protons and 12 negatively charged electrons when is its total charge ?

Mathematics

1 answer:

professor190 [17]2 years ago

3 0

Answer:

The total charge in an atom is zero or it is neutrally charge. both nulify each others charge.

If the atom has some charge in it then it is called an ion.

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Solve -6 4/9-3 2/9-82/9

Gala2k [10]

Answer: The final answer in proper fraction is 169/9

Step-by-step explanation:

Given the expression

-6 4/9-3 2/9-82/9

Firstly let us convert all mixed fraction to proper fraction to further simplify the expression

-58/9 - 29/9 - 82/9

We now have all terms in proper fraction, we can continue by finding the LCM which is 9

= (- 58-29-82)/9

= 169/9

8 0

3 years ago

Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial -42a+9a^2+49

Degger [83]

9(a^2+14/3)^2-14/3+49

9(a^2+14/3)^2+7

6 0

1 year ago

What is the volume of a sphere with a diameter of 10 m, rounded to the nearest tenth of a cubic meter

kirill [66]

Answer:

4188.8 cm^3

Step-by-step explanation:

We can calculate the volume of a sphere by using the following equation:

$\frac{4}{3}\pi r^{3}$

(r=radius)

so let's just plug in what we know

4/3(pi)(10)^3

we can calculate this with a calculator to get 4188.8 cm^3.

4 0

2 years ago

After a 12% increase the cost of a new cooker is £190.40

Svetllana [295]

Answer:

X+.12*x=190.40

X(1+.12)=190.40

X=190.40/1.12=170

X+x+25=100

2x=75

X=37.5%

Men=.375*270=101

4 0

2 years ago

1. What is 3/5+3/5+3/5+3/5 equal to?

nydimaria [60]

Answer:

12/5 or 2 2/5

Step-by-step explanation:

3/5+3/5+3/5+3/5

=> (3+3+3+3) / 5

=> 12/5

=> 2 2/5

Hope it helps......

8 0

2 years ago

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