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Eduardwww [97]
3 years ago
6

If An atom has 10 protons, 11 neutrons, and 9 electrons. What is the atomic number of this atom?

Mathematics
1 answer:
lisov135 [29]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Atomic number is equal to the number of protons in an atom.

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A fish tank in a pet store has 23 fish in it. 10 are orange and 13 are white. Determine the probability that if we select 4 fish
Gala2k [10]

Answer:

ok so the probility of gettting one white fish is

13/23

and if we take out one white fish the problity is

12/22

so we just multiply

12/22*13/23=0.30830039525

so the problity is 0.30 if you choose two fish you will get white for both

3 0
2 years ago
Plsss help i get a f plus in math
Lemur [1.5K]

Answer:

C. 1.5

Step-by-step explanation:

7 0
2 years ago
An artist sells original hand painted greeting cards. He makes $2.50 profit on a small card and $4.00 profit on a large card. He
Marysya12 [62]
Since he sells 5 large cards for every 2 small, we can multiply the number of small cards he needs to sell by 2.5 to find how many large cards he needs to sell.

So let x=the number of small cards sold, and 2.5x=the number of large cards sold

The equation is:Total profit=x+(2.5x)

Since a small card is $2.5, a large card is $4, and the total profit will be $10,000 plug those in to make the equation:

10,000=2.5x+4(2.5x)

We can combine the x's to get 10,000=12.5x and then divide both sides by 12.5 to get x=800.

So he needs to sell 800 small cards.

Multiply that by that 2.5.

And he needs to sell 2000 large cards.

3 0
3 years ago
10x+2y=10 in slope intercept form
faust18 [17]
 <span>Slope-intercept form is Y = MX + B. This is in standard form, AX + BY = C. You have to move the X to the other side of the equation and simplify it. </span>
<span>10x - 2y = 10 </span>
<span>- 10x - 10x Subtract 10x from both sides </span>
<span>- 2y = - 10x + 10 Now everything is in the right place, but it still needs to be simplified. </span>
<span>Divide each term by -2, in order to isolate the variable Y. </span>
<span>- 2y/ - 2 = - 10x/ - 2 + 10/ - 2 </span>
<span>The answer is: y = 5x - 5</span>
7 0
3 years ago
Read 2 more answers
I will make Brailiest, DO IT STEP BY STEP PLZ! Mrs. Fisher jogs every morning. On average, it takes her 7 ½ minutes to run one m
Kazeer [188]

Answer:

22 1/2

Step-by-step explanation: 7 1/2 x3 = 22 1/2

proof 7 1/2 +7 1/2 +7 1/2 = 22 1/2

6 0
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