Answer
The 3rd option "subtract 2 2/7 from both sides"
Step-by-step explanation:
Según datos de una empresa aseguradora de vehículos, dos de cada cinco accidentes son provocados por conductores en estado de ebriedad, ¿cuál es la probabilidad de que tres de nueve accidentes seleccionados al azar hayan sido ocasionados por conductores ebrios?
Answer:
La probabilidad es [tex]0.2508[/tex]
Step-by-step explanation:
Sabemos que según datos de una empresa aseguradora de vehículos, dos de cada cinco accidentes son provocados por conductores en estado de ebriedad. Entonces, si definimos el evento
[tex]A[/tex] : ''Accidente provocado por un conductor en estado de ebriedad''
La probabilidad de este evento es
[tex]P(A)=\frac{2}{5}[/tex] (dato del problema)
Por lo tanto, en cada accidente que ocurre, la probabilidad de que ocurra el evento [tex]A[/tex] es [tex]\frac{2}{5}[/tex] .
Ahora bien, si suponemos cada uno de estos accidentes independientes y con probabilidad de ocurrencia ''p'' constante a lo largo del tiempo, estamos ante la presencia de un proceso Bernoulli.
Dado un proceso de Bernoulli, definimos la variable aleatoria discreta ''[tex]X[/tex]'' como el número de éxitos del proceso Bernoulli para un número fijo de ensayos.
En este caso vamos a definir
[tex]X[/tex] : ''Número de accidentes provocados por conductores en estado de ebriedad de un total de n accidentes''
Se dice que [tex]X[/tex] tiene distribución binomial de parámetros ''n'' y ''p''.
Lo denotamos [tex]X[/tex] ~ Bi (n,p)
En nuestro ejercicio el valor de ''n'' es 9 (son los ensayos que fijamos) y el valor de ''p'' es [tex]\frac{2}{5}[/tex] (definimos como ''éxito'' que el accidente sea provocado por un conductor en estado de ebriedad).
Ahora bien para calcular probabilidad vamos a utilizar la siguiente fórmula :
[tex]P(X=x)=(nCx)p^{x}(1-p)^{(n-x)}[/tex] (I)
'' [tex]P(X=x)[/tex] '' es la probabilidad de que la variable aleatoria [tex]X[/tex] asuma el valor x. En particular, buscamos [tex]P(X=3)[/tex] que es la probabilidad de que de nueve accidentes (fijados), tres sean provocados por conductores en estado de ebriedad.
'' [tex](nCx)[/tex] '' es el número combinatorio definido como
[tex]nCx=\frac{n!}{x!(n-x)!}[/tex]
Reemplazando los datos en la ecuación (I) :
[tex]P(X=3)=(9C3)(\frac{2}{5})^{3}(\frac{3}{5})^{6}=0.2508[/tex]
La probabilidad pedida es [tex]0.2508[/tex]
Calculate the dot product of x = (1, −2, 0, 4) is in double-struck R4 and y = (1, 2, 3, 4) is in double-struck R4.
Answer:
the dot product is 13
Step-by-step explanation:
The computation of the dot product is shown below:
Given that
x = (1, −2, 0, 4)
y = (1, 2, 3, 4)
Based on the above information
The dot product is
= (1) (1) + (-2) (2) + (0) (3) + (4) (4)
= 1 - 4 + 0 + 16
= 13
Hence, the dot product is 13
We simply multiplied each of them so that the correct value could come
Write a word problem for x+2=15
_
5
Answer:
x = 13 is the answer for your question
13 + 2 = 15
I NEED HELPPP ASAPPPPP I WILL GIVE BRAINLIESTTTT!!!!!!
a function is a binary relation between two sets that associates every element of the first set to exactly one element of the second set.
Hello please help if you can thank you :) I will mark barinlasit
Answer:
a) -29
b) 16
c) -6
d) 23
e) 12/a
f) x = -5
g) x = -2
h) x = 4
Step-by-step explanation:
I skipped the optional ones
Lucy has 3795 beads. She has 1145 fewer beads than hazel. About how many beads do Lucy and Hazel have altogether? Estimate by rounding each number to the nearest thousand before adding.
which of the folowing numbers would be found to the right of the number -35 on a number line ?
Please please help struggling so much in mathematics☹️
Answer:
C. y = 4
Step-by-step explanation:
Answer:
Option one is the correct answer y=-2
LLICIOS:
1. José tiene en su bolsillo un grupo de monedas de 5 y 10 centavos, y hay once
monedas más de 5¢ que las de 10€. Si el total es un dólar.
halla la cantidad de monedas de cada tipo.
Answer:
Hay 14 monedas de 5 centavos y 3 monedas de 10 centavos.
Step-by-step explanation:
Llamemos "c" a las monedas de 5 centavos y "d" a las monedas de 10 centavos.
Hay once monedas más de 5¢ que las de 10¢. La expresión matemática para ello es:
c = d + 11 [1]
El total es 1 dolar. La expresión matemática para ello es:
0,05c + 0,10d = 1 [2]
Si reemplazamos [1] en [2],
0,05(d + 11) + 0,10d = 1
0,05d + 0,55 + 0,10d = 1
0,15d = 0,45
d = 3
Si reemplazamos d = 3 en 1,
c = d + 11 = 3 + 11 = 14
Light travels 3 x 10 kilometers in one second. How far does it travel in 7.6 seconds?
Write your answer in scientific notation.
Answer:
.0076
Step-by-step explanation:
how much is one lollipop? 25 lollipops for $46.00?
Answer: $1.84
Step-by-step explanation: 46 / 25 = 1.84
Answer:
$1.84
Step-by-step explanation:
25 divide by $46.00 = $1.84
Plz answer the question ASAP
Answer:
4 units
Step-by-step explanation:
Answer:
4.0 units
Step-by-step explanation:
The speed of the wind is changing according to the function V (t) = -t/2 + 30, where t = time in minutes after 6:00 p.m. and V(t) = wind speed in miles per hour
(mph). Which statement best describes the meaning of the equation V(20) – V(10) = -5?
A) In a period of 5 minutes, the wind speed increased from 10 mph to 20 mph.
B) The wind speed decreased by 5 mph between 6:10 p.m. and 6:20 p.m.
C) The wind speed increased by 5 mph between 6:10 p.m. and 6.20 p.m.
D) In a period of 5 minutes, the wind speed decreased from 20 mph to 10 mph.
Answer:
C
Step-by-step explanation:
Answer:
The wind speed increased by 5 mph between 6:10 p.m. and 6.20 p.m.
Step-by-step explanation:
I hope this helped!
y=-x^3 + 2x2 - 4 at (0, -4)
Find the normal line
Answer:
True
Step-by-step explanation:
I will assume you want to see if (0, -4) is a point on the line.
y = -x³ + 2x² - 4
~Substitute
-4 = -(0)³ + 2(0)² - 4
~Simplify
-4 = -4
Best of Luck!
7.668 divided by 0.009
Answer:
852
Step-by-step explanation:
Answer:
852
Step-by-step explanation:
7.668 divided by 0.009 start off by making your division equation the way you want to write it and then go one by one on the numbers and start dividing it then you will get the answer: 852
70
Tommy currently has a cell phone plane for text messaging with Phone-Phriends which charges $0.20 per text message. Tommy is considering switching to
an unlimited plan which costs $49 per month. How many messages each month must Tommy send for it to be cost effective to switch to the unlimited
plan?
Answer:
49÷0.20= 245
He has to be able to have a number of text each month to be able to switch so 0.20 for each text he sends each month so you have to divide from 49.
The level of water in a bathtub rises 5 inches in 2 hours. Which of the following represents the rate of change of the water level with respect to the time?
A. 5 inches/ 2 hours
B. 2 inches/5 Hours
C. 5 hours/ 2 inches
D. 2 hours/ 5 inches
I need help please help me out
Answer:
60 feet a day
Step-by-step explanation:
Answer:
2940
Step-by-step explanation:
convert the week to days. 1 week is 7 days so 420 * 7 = 2940
What is the value of x?
98°
Answer:
x = 139
Step-by-step explanation:
Isosceles triangle.
Let the equal angles = y
y + y + 98 = 180 {Sum of all the angles of triangles}
2y + 98 = 180
2y = 180 - 98
2y = 82
y = 82/2
y = 41
x = 41 + 98 { exterior angles equals the sum of interior opposite angles}
x = 139
It takes 4 people 36 minutes to solve 18 problems. How many minutes will it take 6 people to solve 42 problems.
Answer:
54 I think, but I'm not sure sorry
Step-by-step explanation:
4 ÷ 2 = 2
36 min ÷ 2 = 18 min
2 x 3 = 6 (6 ppl)
18 min x 3 = 54 min
Solve for k:
K/2 plus 1/2=3
Answer:v
vvre
Step-by-step explanation:
Answer:
K should be 5
Step-by-step explanation:
1/2 is .5 which leaves k/2 you need 2.5 to make three and 2.5*2 is 5 5/2 is 2.5 plus 5 is 3 therfore k is 5
A company decides to give ID numbers to its employees that consist of one letter followed by three digits. How many different such ID numbers are there?
Answer:
25,974 possible ID combinations
Step-by-step explanation:
Since the ID card will consist of one letter and three digits to find the total number of possibilities we simply multiply the number of letter options that exist by the total amount of numbers each letter can be followed by. There are a total of 26 letters in the English Alphabet. Since each letter is followed by only 3 digits, then the largest number that can exist after the letter is 999. Therefore, we simply multiply 26 by 999 to find the total number of possible outcomes.
26 * 999 = 25,974 possible ID combinations
The number of different such ID numbers are there should be 25,974 possible ID combinations
Calculation of the no of different ID numbers:Since the ID card comprise one letter. Also, there are total of 26 letters in the English Alphabet.
So here we can do that we simply multiply 26 by 999 that comes 25,974.
Therefore, The number of different such ID numbers are there should be 25,974 possible ID combinations
Learn more about number here: https://brainly.com/question/17802211
A city is putting in a sand pit at the park. The length is an even, one-digit whole number, and
the width is 6.7 feet. Which explains the least and greatest possible areas for the sand pit?
Answer:
Step-by-step explanation:
Answer:
Listen the number is an EVEN one-digit, so that means all odd numbers that are one-digit numbers are out so that means number A is wrong so its between B, C, and D. If you read the answer throughully through B, C, and D you will find one of the 2 x 6.7 is wrong. To find the correct answer to 2 x 6 and if the sum of 2 x 6 is equal to your 2 x 6 you have the correct answer! Btw I forgot the exact answer but I know it was either B or C.
Step-by-step explanation:
vzorec pre obsah štvorca
Ahoj! Vzorec je Vynásobte dĺžku šírkou a budete mať štvorcové stopy. Tu je základný vzorec, ktorým sa môžete riadiť: Dĺžka (v stopách) x šírka (v stopách) = plocha v štvorcových stopách. Dúfam, že vám to pomôže! Veľa šťastia a prajem skvelý deň / noc. ❤️✨
ax+b=c
Solve for x
Please include work
Answer:
x=c/a - b/a
Step-by-step explanation:
subtract b
divide by a
Find the values of x and y.
Answer: y = 129, x = 51
Step-by-step explanation:
angles 129 and y are corresponding, so they are equal to each other
y and x are supplementary
so, y + x = 180
x = 180 - y = 180 - 129 = 51
Answer:
I belive y has to be at least 133 because it's just a little bit longer than the 229 one.
And x is most likely to be 125 because if you line up 129 with x, x is should be a little smaller so x should be 125
Help please please please
Answer:
They often use up other resources native organsinsms need.
Step-by-step explanation:
By doing so they can end up killing native organsinsms.
factor -1/2 out of -1/2 x + 6
Answer:
[tex]-1/2 * (x - 12)[/tex]
Step-by-step explanation:
Divide each term of the expression by -1/2. -1/2x divided by -1/2 = x. 6 / -1/2 = -12.
please complete 7 and 8
giving brainliest
Evaluate: 7x + 4y when x=5 and y= -3
Answer:
23
Step-by-step explanation:
Step 1:
7x + 4y Equation
Step 2:
7 ( 5 ) + 4 ( - 3 ) Input x and y
Step 3:
35 - 12 Multiply
Answer:
23
Hope This Helps :)