Ask question

Ask question

All categories

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

1 answer:

hram777 [196]3 years ago

6 0

Answer:

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

You might be interested in

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