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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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PLEASE HELP
dsp73

Answer:

All events are independent

Step-by-step explanation:

You are given the table

\begin{array}{cccc}&\text{Chocolate}&\text{Vanilla}&\text{Total}\\\text{Adults}&0.21&0.39&0.60\\\text{Children}&0.14&0.26&0.40\\\text{Total}&0.35&0.65&1.00\end{array}

Two events A and B are independent when

Pr(A\cap B)=Pr(A)\cdot Pr(B)

a) A="Chocolate"

B="Adults"

A and B="Chocolate and Adults"

Pr(A)=0.35\\ \\Pr(B)=0.60\\ \\Pr(A\cap B)=0.21

Since 0.35\cdot 0.60=0.21 events are independent

b) A="Children"

B="Chocolate"

A and B="Children and Chocolate"

Pr(A)=0.40\\ \\Pr(B)=0.35\\ \\Pr(A\cap B)=0.14

Since 0.40\cdot 0.35=0.14 events are independent

c) A="Vanilla"

B="Children"

A and B="Vanilla and Children"

Pr(A)=0.65\\ \\Pr(B)=0.40\\ \\Pr(A\cap B)=0.26

Since 0.65\cdot 0.40=0.26 events are independent

4 0
3 years ago
Kendra flips a fair coin two times. What is the probability that she will flip tails both times?
wolverine [178]

Answer: 1/4 or 25%

Step-by-step explanation:

The chance of flipping tails is 1/2, so you multiply 1/2*1/2 (for the 2 flips) to get 1/4 (1/2^2=1/4).

4 0
3 years ago
In the following diagram which segments are radii of circle p​
lapo4ka [179]

Answer:

The correct answers would be A,C,D

Step-by-step explanation:

5 0
3 years ago
I need help ASAP.........
aliina [53]

Answer:

it will take 20 minutes for her to weed all of her garden

Step-by-step explanation:

8 minutes=40%   16 minutes= 80%  20 minutes=100%

plz mark brainliest

7 0
3 years ago
Read 2 more answers
Larre used the visual model to show what fraction of an hour he spent outside. He wants to break the next hour into two times as
klasskru [66]

First, identify what fracion of an hour Larre spent outside using the model.

Since the square is divided in 4 equal parts, then the denominator of the fraction that Larre wants to represent is 4.

On the other hand, since 2 of those 4 parts are colored, then the numerator of the fraction that Larre wants to represent is 2.

Then, the fraction represented by the visual model is:

\frac{2}{4}

To find the answer, find an equivalent fraction by multiplying both the numerator and the denominator by 2:

\frac{2}{4}=\frac{2\times2}{4\times2}=\frac{4}{8}

Therefore, an equivalent fraction that can be made by multiplying the numerator and denominator by 2, is:

\frac{4}{8}

The correct choice is option C) 4/8.

3 0
1 year ago
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