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
emmasim [6.3K]
2 years ago
12

PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST

Mathematics
2 answers:
lubasha [3.4K]2 years ago
8 0
The answer is the last option, hope this helps lol
expeople1 [14]2 years ago
6 0

Answer:

C. and D.

Step-by-step explanation:

We can cross of A. because if A. were to be correct, nothing else would be correct.

Now we know it has to be B. or C. and D.

D. has to be one of them since you can't have B. and C.

To find out if it is either B. or C. we need to think into it more. So if we had the mean of 80%, that means we need to have some scores over 75%. That would be C. since it says 75% or greater.

You might be interested in
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
X(5)+2=244<br>help pls<br>(^_^)​
arsen [322]

Simplify both sides of the equation

  • 5x+2=244

Subtract 2 from both sides

  • 5x+2−2=244−2
  • 5x=242

Divide both sides by 5

\frac{5x}{5}  =  \frac{242}{5}

  • Answer

\: x =  \dfrac{242}{5}

OR

\: x =  48.4

6 0
2 years ago
Read 2 more answers
Need math help. Thanks in advance.
Mademuasel [1]
9. D because it fits the description when it is graphed. 
11. D because it has the correct vertex, which is (1.5, 4.75). 
12. f(x)=-4(x-2)²+16 works with the table and provided graph!
13. 0 isn't a zero for f(x), so B is correct (the zeros are 1/2 and 4). 
14. The width is about 3.831. 
15. The answer is B because the equation for a parabola in this form is: 
      f(x) = (x - r₁)(x - r₂)

Every one of these except for 15 was solved using desmos, a graphing calculator. 

Hope this helps!
7 0
2 years ago
PLZ HELPP MEE DUE TONIGHT!!!!!!!!!!!!!
KATRIN_1 [288]
We know that
x²+px−35=0-------> <span>has one root that is equal to 7
so
substitute x=7 in the equation
</span>7²+p*7−35=0
49+p*7−35=0
14+p*7=0
p=-14/7------> p=-2

the answer Part a) is 
t<span>he value of the coefficient p is -2
</span>
Part b) <span>Find the other root
</span>x²+px−35=0-----> x²-2x−35=0
<span>
using a graph tool-------> to resolve the second order equation
see the attached figure

the other root is
x=-5

the answer part b) is
</span> the value of  the other root is -5<span>

</span>

3 0
3 years ago
Which is bigger 5/8 or 5/6?
Gennadij [26K]
5/6 is bigger because if the numbers are closer to each other then the fraction is bigger
3 0
3 years ago
Read 2 more answers
Other questions:
  • How do you solve 3x-15=7x-10
    14·2 answers
  • How do I solve problem 15
    14·1 answer
  • Which of these statements describes a rebate?
    8·2 answers
  • What is the absolute value for: <br> |40|
    15·2 answers
  • 20 POINTS ASAP 16 = 2^x − 2 <br><br>a)2 <br><br>b)4 <br><br>c)6 <br><br>d)8
    7·1 answer
  • Which statement is true about the parentheses in this expression? [24 − (15 + 2) + 3] − 9
    7·1 answer
  • Which expression is equivalent to
    7·1 answer
  • Select the situation that have a unit rate equivalent to 3 units to 1 unit
    6·1 answer
  • What is the median score on the exam ?<br> a) 70<br> b) 75<br> c) 77.5<br> d) 85
    9·1 answer
  • As indicated below, write the equations of the line passing through the point (2, 4) and parallel to the line whose equation is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!