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Leya [2.2K]
3 years ago
12

5(x+3)can you tell me please

Mathematics
2 answers:
lesantik [10]3 years ago
7 0
If you're just looking for a formula, all you have to do is distribute the 5 to the x+3 to get 5x+15. If you're trying to find x, you would need to know what this formula equals to solve it.
-BARSIC- [3]3 years ago
5 0
What you do is you distribute the 5.

So your answer would be 5x+15
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Only answer 28 ( I added this parentheses so that the thing would accept my question)
avanturin [10]

Answer:

(a). Number of protons in a chlorine atom = 17

(b). Atomic number of sodium = 11

Step-by-step explanation:

Let the number of protons in a sodium atom = <em>x</em>

Then, the number of protons in a chlorine atom =<em> x</em> + 6

Now, it is given that the atomic number of an element is equal to the number of protons per atom.

So, atomic number of sodium (Na) = <em>x</em>

Atomic number of chlorine (Cl) = <em>x</em> + 6

It is given that the atomic number of chlorine is 5 less than twice the atomic number of sodium.

∴ atomic number of chlorine (Cl) = 2 × atomic number of sodium (Na) - 5

⇒ <em>x</em> + 6 = 2<em>x</em> - 5

⇒ <em>x </em>- 2<em>x</em> = -5 - 6

⇒ -<em>x</em> = -11

Cancelling the minus sign from both sides, we get

<em>x</em> = 11

(a). Number of protons in a chlorine atom = <em>x</em> + 6

                                                                     = 11 + 6      (∵ <em>x</em> = 11)

                                                                     = 17

(b). Atomic number of sodium = <em>x</em> = 11

3 0
3 years ago
|2x-7| ≤ 11<br><br>Solve. Graph the solution set on a number line.​
JulsSmile [24]

Answer:

Answer in pictures attached.

Step-by-step explanation:

You're welcome!

3 0
2 years ago
the ratio of red apples to green apples is 2:3 if there are 21 green apples how many red apples are in the basket
earnstyle [38]

Answer:

49

Brainliest :)

4 0
3 years ago
Read 2 more answers
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*.. <br> IM GIVING 40 POINTS !! DONT SKIP :((.
umka2103 [35]

Answer:

y=9x+0

Step-by-step explanation:

So if you look at the table, <em>y </em>is multiples of 9.

7 0
2 years ago
Dot stamped 460 envelopes in 30 minutes, how many envelopes per minute did Cody stamp ?
makkiz [27]
460 (envelopes) / 30 (minutes) = 15.3 rounds down to 15 envelopes per minute
5 0
3 years ago
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