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earnstyle [38]
3 years ago
14

How many protons are in an element with an atomic number of 8 and a mass number of 18?

Mathematics
2 answers:
Orlov [11]3 years ago
8 0
A)8,atomic number also means proton number
aleksandrvk [35]3 years ago
4 0
Since the atomic number is 8 that will be the number of protons given that the element is a neutral element meaning that the number of protons and electrons are the same. Therefore the answer is 8
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13 squared? how does it mean and what is the solution?
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13 squered it means that =13 to the second power
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6 0
3 years ago
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Talib is trying to find the inverse of the function to the right. His work appears beneath it. Is his work correct? Explain your
NikAS [45]

Answer:

Talib is correct i think

Step-by-step explanation:

6 0
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How do I do this question? Please Help!
AURORKA [14]

Answer:

2x+50 and 5x-55 both are congruent or have same measure.

Step-by-step explanation:

Since we want to prove that both lines are parallel, this means no theorems that involve with parallel lines apply here.

First of, we know that AC is a straight line and has a measure as 180° via straight angle.

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Sum of two measures form a straight line which has 180°.

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3x+75=180

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Thus, x = 35°

Then we substitute x = 35 in every angles/measures.

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5x-55 = 5(35°)-55 = 175°-55° = 120°

Since 2x+50 and 5x-55 have same measure or are congruent, this proves that both lines are parallel.

5 0
3 years ago
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Answer:

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Alla [95]

Step-by-step explanation:

The statement is 3 multiplied by 2/3. Here, the first no of 3 and the other one is 2/3.

It can be written as follows :

3\times \dfrac{2}{3}

3 is present at the numerator as well as the denominator. It will cancel out.

So,

=2

So, 3 multiplied by 2/3 equals 2.

5 0
3 years ago
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