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RSB [31]
3 years ago
10

10. Un átomo de potasio tiene 19 protones en el núcleo y 20 neutrones. A partir de estos datos, a) ¿Cuál será su número atómico?

7YGº
Mathematics
1 answer:
hram777 [196]3 years ago
6 0

Answer:

translate this to English and I'll help!(:

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I WILL GIVE YOU BRAINIEST AND 10 POINTS
gregori [183]
Plz give me this thanks
8 0
4 years ago
Read 2 more answers
The sum of two numbers is 15. four times the smaller number is 60 less than twice the larger number. what is the larger number?
kirza4 [7]
X = smaller number, y = larger number
x + y = 15.....x = 15 - y
4x = 2y - 60

4(15 - y) = 2y - 60
60 - 4y = 2y - 60
60 + 60 = 2y + 4y
120 = 6y
120/6 = y
20 = y <==== larger number is 20

x + y = 15
x + 20 = 15
x = 15 - 20
x = - 5
4 0
4 years ago
(WILL GIVE BRAINLIEST)
NISA [10]

Answer:

y=3/4x-5.5 this should be your answer

Step-by-step explanation:

sorry of im wrong

have a wonderfull day!

5 0
3 years ago
What is the sum (2/5 x +5/8)+(1/5 x - 1/4)?
Artyom0805 [142]

\left(\dfrac{2}{5}x+\dfrac{5}{8}\right)+\left(\dfrac{1}{5}x-\dfrac{1}{4}\right)=\left(\dfrac{2}{5}x+\dfrac{1}{5}x\right)+\left(\dfrac{5}{8}-\dfrac{1}{4}\right)\\\\=\dfrac{2+1}{5}x+\left(\dfrac{5}{8}-\dfrac{1\cdot2}{4\cdot2}\right)=\dfrac{3}{5}x+\left(\dfrac{5}{8}-\dfrac{2}{8}\right)\\\\=\dfrac{3}{5}x+\dfrac{5-2}{8}=\boxed{\dfrac{3}{5}x+\dfrac{3}{8}}

3 0
3 years ago
HELP ME PLEASE! I’m so dumb and don’t understand this help me!!!
Verdich [7]

First, simplify the first two terms: 3sqrt(x) - 2sqrt(x). This reduces to sqrt(x).

Next, add 4sqrt(x) to this 1sqrt(x); the sum and answer to this question is 5sqrt(x).


3 0
3 years ago
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