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Musya8 [376]
3 years ago
12

An atom has a charge of +1. If the atom's nucleus contains 23 protons, the atom must have

Mathematics
2 answers:
Anit [1.1K]3 years ago
5 0
22 electrons (electrons have -ive charge)
Ymorist [56]3 years ago
4 0
If an atom has a let's say, +2 charge, it will mean that the atom has two more protons than electrons. Protons have +1 charges and electrons have -1 charges. So, said this, if you had one more proton than an electron, it would be a -1 charge. Because of this, if an atom had a +1 charge, it would have to have one more proton than electrons. So, the answer could be "the atom must have 22 electrons" but, the question is sort of vague? It could really be anything.
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How to make average ?
Viktor [21]

add all numbers and divide by the count of numbers.

6 0
3 years ago
Ling tried to evaluate the expression 15÷5+7×5 ​
rewona [7]

Answer:

38

Step-by-step explanation:

always remember bedmas or pedmas. 15÷5 is 3 plus 7x5 which is 35 so add 3 and 35 to get 38.

6 0
3 years ago
Factor –7x3 + 21x2 + 3x – 9 by grouping. What is the resulting expression?
sergeinik [125]
Take the first 2 and take out -7x2. bringing it to (-7x2)(x-3)+(3x-9)
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-7x^2 (x-3)+3 (x-3)
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4 0
3 years ago
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PilotLPTM [1.2K]
10/17= 0.588

So it's 59%

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7 0
2 years ago
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What is an equation of the line that passes through the point (-5, -6) and is
Vikentia [17]

Answer: y= 2x +4

Step-by-step explanation:

1. To be able to write the equation of the line, you want to be able to find the slope first. To do so, rearrange the given equation x+2y=2 into slope-intercept form, which is y=mx+b

First subtract x from both side, which will give us 2y=2-x. Rearrange this to get 2y= -x+2. Then, divide both sides by 2. This will give us y= -1/2x+1

2. Now that you have the equation, look for the slope in the new equation; this will be the m value. In this case, the slope is -1/2. Since we are looking for a line that is perpendicular, we have to change the slope so that it is the opposite reciprocal. The opposite reciprocal of -1/2 is 2, so the slope of the equation we want to find is 2.

3. Next, all we have to do is plug the given ordered pair (-5, -6) and the slope that we found (m=2) into the point-slope equation, which is y-y_{1} = m(x-x_{1} )

That will give us:

y+6 = 2(x+5)

4. Now, solve this equation.

y+6 = 2(x+5)  --> distribute the 2 inside the parentheses

y+6 = 2x + 10  --> subtract 6 from both sides

y= 2x +4

4 0
2 years ago
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