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trasher [3.6K]
3 years ago
10

Por motivo de la victoria de Colombia contra Brasil en las eliminatorias 2022, una panadería preparó un pastel: Vendieron 2/5 y

obsequiaron 1/3 ¿Qué cantidad de pastel quedó?
Mathematics
1 answer:
Marizza181 [45]3 years ago
6 0

Answer:

the cake that was left is 1 by 15

Step-by-step explanation:

The computation is shown below:

= sale - gave away

= \frac{2}{5} - \frac{1}{3}\\\\= \frac{6 - 5}{15}   \\\\= \frac{1}{15}

Hence, the cake that was left is 1 by 15

So the same is relevant and considered too

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2 which of the following is a perfect cube<br> a) 400 -<br> D. 3375–<br> C 8000 -
allochka39001 [22]

Answer:

8000 is a perfect cube but 3375 can be also but i m a little sure that 8000 is a perfect cube

8 0
3 years ago
Suppose that 75% of all trucks undergoing a brake inspection at a certain inspection facility pass the inspection. Consider grou
RSB [31]

Answer:

b) 0.2961

c) 0.2251

d) Mean = 11.25, Standard deviation =  1.667  

Step-by-step explanation:

We are given the following information:

We treat trucks undergoing a brake inspection passin as a success.

P( trucks undergoing a brake inspection passes the test) = 75% = 0.75

a) Conditions for binomial probability distribution

  1. There are n independent trial.
  2. Each trial have a success probability p
  3. The probability of success is same for all trials.

Then the number of trucks undergoing a brake inspection follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 15

b) P(proportion of groups will between 8 and 10 trucks pass the inspection)

We have to evaluate:

P(8\leq x \leq 10) = P(x = 8) + P(x = 9) + P(x = 10)\\= \binom{15}{8}(0.75)^8(1-0.75)^7 + \binom{15}{9}(0.75)^9(1-0.75)^6 + \binom{15}{10}(0.75)^{10}(1-0.75)^5\\= 0.0393 + 0.0917 + 0.1651\\= 0.2961

c) P( exactly 3 trucks fail the inspection)

p = 0.25

P(x = 3)\\= \binom{15}{3}(0.25)^3(1-0.25)^{12}\\=0.2251

d) Mean and standard deviation

\mu = np = 15(0.75) = 11.25\\\sigma = \sqrt{np(1-p)} = \sqrt{15(0.75)(1-0.75)} = 1.667

6 0
3 years ago
If u evenly divide 3/4 of a pizza among 3 people. How much will each person get?
Dafna11 [192]
I’m pretty sure it’s 2 but i’m not 100 percent on that
7 0
3 years ago
The price of an item has dropped to $39 today. Yesterday it was
Kobotan [32]

Answer:

40% decrease

Step-by-step explanation:

First, let's find the value decrease of the item from yesterday to today

$65 - $39 = $26

That means that $65 was 100% of the price and decreasing it by 26 gets us to 39

We need to find the percentage of 39 in 65

39/65 = 0.6 or 60%

If 39 is 60% of 65, then there was a 40% decrease form 100%

To check we can calculate the percentage of 26 in 65:

26/65 = 40%

There was a 40% decrease

-Chetan K

6 0
2 years ago
(1.5 ? 10^2) X (2.0 ? 10^3) Express your answer in scientific notation and standard form.
ludmilkaskok [199]

Answer: 3*10^5 or 300,000 cant remember witch one it is

Step-by-step explanation:

1.5*10^2= 150

2*10^3=2,000

150*2000=300,000

3*10^5

4 0
3 years ago
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