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eduard
2 years ago
10

Electrons and protons are particles in an aton with equal but opposite charges. Electrons have a negative charge and protos have

a positive charge. What is the charge of an atom with 2 more electrons than protons?
Mathematics
1 answer:
vredina [299]2 years ago
3 0

Answer:

The total charge on atom is -2.

Step-by-step explanation:

We are given the following in the question:

Electrons have a negative charge.

Let this charge be represented by -1.

Protons have a positive charge. Let this charge be represented by +1.

An atom have 2 more electrons than protons.

Let x be the number of protons.

Then, the number of electrons are (x+2)

Total charge on atom =

=Charge on atom = Charge of protons + Charge of electrons

=(+1)(x) + (-1)(x+2)\\=x-x-2\\=-2

Thus, the total charge on atom is -2.

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Mike is driving a boat at 12 mph and is increasing his speed by 0.2 mph each second. Hank is driving a boat at 26.4 mph and is d
VLD [36.1K]

Answer: After 16 seconds the boats will be traveling the same speed.

Step-by-step explanation:

Given: Mike is driving a boat at 12 mph and is increasing his speed by 0.2 mph each second.

Mike's spewed after x seconds = 12 + 0.2x

Hank is driving a boat at 26.4 mph and is decreasing his speed by 0.7 mph each second.

Hank's speed after x seconds = 26.4 -0.7 x

As per given,

12 + 0.2x =  26.4 -0.7 x

Subtract 12 from both sides

0.2x= 26.4-12-0.7x

⇒ 0.2x= 14.4-0.7x

Add 0.7xn on both sides , we get

0.2x+0.7x= 14.4

⇒ 0.9x = 14.4

Multiply 10 on both sides, we get

9x=144

Divide both sides by 9 , we get x= 16

Hence, after 16 seconds the boats will be traveling the same speed.

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3 years ago
NEED HELP ON THIS ASAP
Valentin [98]

Answer:

34

Step-by-step explanation:

7 0
3 years ago
A salesperson receives a 3% commission on sales. The salesperson receives $180 in commission. What is the amount of sales?
gogolik [260]
Hello there! We are looking for the amount of total sales. To find the amount of total sales, we can write and solve a proportion. Set it up like this:

180/x = 3/100

We do this, because 180 is part of the whole, 3% is a part of 100%. This proportion will help us get to the correct answer. Let's cross multiply. 180 * 100 is 18,000. 3 * x is 3x. that makes 18,000 = 3x. Now, divide each side by 3 to isolate the x. 3x/3 cancels out. 18,000/3 is 6,000. Let's check this. 6,000 * 3% (0.030 is 180. 180 = 180. There. x = 6,000. The amount of sales is $6,000.
6 0
3 years ago
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cestrela7 [59]

Answer:

1) 45 minutes

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2 years ago
Write forty-eight out as a hundred as a hundred as a fraction in simplest form.
slamgirl [31]
The original answer should be 48/100.
Reduced is 24/50
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3 years ago
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