1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sattari [20]
3 years ago
15

Helppp and explain than you

Mathematics
2 answers:
ss7ja [257]3 years ago
5 0

9514 1404 393

Answer:

  1. x = 2
  2. (-5, 4, 6)

Step-by-step explanation:

1. Substitution can work for this.

  2x +3(4x -5) = 13

  14x = 28 . . . . . add 15

  x = 2 . . . . . . . divide by 14

__

2. The equation z=6 eliminates all but the 1st and 3rd choices. Using that value in the first equation gives ...

  x + y + 6 = 5

  x + y = -1

Only the 3rd choice satisfies this equation.

  (x, y, z) = (-5, 4, 6)

Radda [10]3 years ago
3 0

Answer:

1) x = 2

Step-by-step explanation:

Hope it helps. I'll try to solve the second one too

You might be interested in
If I equals PRT which equation is equivalent to T
snow_lady [41]
I = P · R · T
Divide both sides by P·R
I/(P·R) = T

Answer: \frac{I}{PR} = T
7 0
3 years ago
solo el 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal. Si
prisoha [69]

Usando la distribución binomial, hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

<h3>¿Qué es la distribución binomial?</h3>

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

Los parámetros son:

  • n es el número de ensayos.
  • p es la probabilidad de éxito en un ensayo
  • x es el número de éxitos

En este problema, hay que:

  • 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal, o sea p = 0.2.
  • Llegan 10 empleados, o sea, n = 10.

La probabilidad de que el guardia de seguridad encuentre al menos uno en la base militar restringida es dada por:

P(X \geq 1) = 1 - P(X = 0)

En que:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{10,0}.(0.2)^{0}.(0.8)^{10} = 0.1074

Por eso:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1074 = 0.8926

Hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

Puede-se aprender más a cerca de la distribución binomial en brainly.com/question/25132113

3 0
2 years ago
a car costs 25,750.00 and depreciates in value 20%per year. how much will the car be worth in 5 years?
andriy [413]
In five years the car will be worth $9,472.90
3 0
3 years ago
Complete the following table for residuals for the linear function f(x) = 138.9x − 218.76. (Round to the hundredths place)
OLEGan [10]

<em>Answer:</em>

<h3><em>i believe it is 65 if it isnt then idk</em></h3>

<em>Step-by-step explanation:</em>

6 0
3 years ago
OnOff
Sindrei [870]

Answer:

2?

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. Y
    9·1 answer
  • Which equation does not represent a linear function of x
    11·1 answer
  • find the length, width and area of the rectangle formed by the pints R(-2,3), S(4,3), T(4,-1) and U (-2,-1)
    15·1 answer
  • What is the length of PQ , rounded to the nearest tenth.
    6·1 answer
  • Please help me figure this out
    9·1 answer
  • Can someone let me know if this is right? Show work.
    8·1 answer
  • 1. You roll two dice. What is the probability of rolling a sum of 8 or more?
    6·1 answer
  • the bulk juice outlet charges $4 for a quart of any organic juice. using this information, fill in the prices for different volu
    9·1 answer
  • What is the y-intercept of the line
    6·1 answer
  • In the above figure, m AOC=26 and m BOD= (2x+39). If AOC and BOD are vertical angles whats the value if x?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!