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3 years ago

If element X has 12 protons, how many electrons does it have?

Mathematics

1 answer:

andre [41]3 years ago

6 0

If an element has x protons, it almost always has x electrons at ground state. Thus, your answer is 12.

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I need this now *will give brainliest if helpful* NO LINKS

mars1129 [50]

Lets put the problem all together first

1) p^2+mn

2^2+0(-1)

Now we start

2x2=4

0x-1=0

4+0=4

Your answer should be 4:)

2) m+np^2

0+-1(2)^2

2x2=4

-1x4=-4

0+-4=-4

Your answer should be -4:)

6 0

2 years ago

Read 2 more answers

thunder from a bolt of lightning travels 1/10 mile in 1/2 second at this rate how many miles can a travel in one second

frutty [35]

Answer:

It travels 1/5 mile in one second

Step-by-step explanation:

1/10 * 2 = 2/10 = 1/5

Since the bolt of lightning travels 1/10 mile in half a second, then to find how much it travels in one a second you simply multiply 1/10 by 2, which equals 2/10, which can be simplified to 1/5.

3 0

2 years ago

write an equation in slope intercept form for the line described. perpendicular to y = -1/2x + 2/3, passes through (2,3)

Alex17521 [72]

Step-by-step explanation:

Hey there!

Follow the steps to get answer.

Use one point formula and find 1st equation.
After that you find the slope of second equation.
Use the condition of perpendicular lines and find the slope of first equation.
Put slope value of equation in equation (i) and simplify them to get equation.

The equation of a line passing through point (2,3) is;

(y-3)= m1(x-2).......(i).

Another equation is;

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

2nd equation..

Now, From equation (ii)

We have;

Comparing equation (ii) with y = mx+c.

We get;

Slope = -1/2.

For perpendicular lines,

$m1 \times m2 = - 1$

$m1 \times \frac{ - 1}{2} = - 1$

Therefore the slope is 2.

Put value of slope (m1) in equation (i). We get;

$(y - 3) = 2(x - 2)$

Simplify them to get equation.

$(y - 3) = 2x - 4$

$y = 2x - 1$

Therefore the required equation is y = 2x-1.

Hope it helps..

4 0

3 years ago

U − -23 _______ = -8 -9 Solve for u Thanks!

Romashka [77]

Answer:

u=95

Step-by-step explanation:

To solve this problem we need to isolate 'u' variable using properties of equation.

Lets multiply by -9 the whole equation

u - -23=-8*9

Remember keys features of algebra:

- * - = +

- * += -

+ * - = -

+ * + =+

So, our equations becomes>

u+23=-72

Lets now subtract 23 to both sides

u-23=-72-23

We have u=95

8 0

3 years ago

Read 2 more answers

Can someone help me with this it is confusing :(

Marina CMI [18]

What are you wanting help with

7 0

3 years ago