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Otrada [13]
3 years ago
9

Help help 100 points

Mathematics
1 answer:
Alinara [238K]3 years ago
5 0

Answer:

all of them except the first and the 4th

Step-by-step explanation:

You might be interested in
Ezra spins the following spinner 50 times. How many times should he expect to land on a 4?
aev [14]

Answer:

10

Step-by-step explanation:

you divide 5 and 50

7 0
3 years ago
USA Today reports that about 25% of all prison parolees become repeat offenders. Alice is a social worker whose job is to counse
MissTica

Answer:

P(x = 0) = 0.004

P(x = 0) = 0.047

P(x = 0) = 0.211

P(x = 0) = 0.422

P(x = 0) = 0.316

Step-by-step explanation:

We are given the following information:

We treat a person who does not become a repeat offender as a success.

P(Success) = P(person who does not become a repeat offender) = 0.75

Then the number of people 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 = 4

We have to evaluate:

P(x = 0)\\= \binom{4}{0}(0.75)^0(1-0.75)^4 = 0.004

P(x = 1)\\= \binom{4}{1}(0.75)^1(1-0.75)^3 = 0.047

P(x = 2)\\= \binom{4}{2}(0.75)^2(1-0.75)^2 = 0.211

P(x = 3)\\= \binom{4}{3}(0.75)^3(1-0.75)^1 = 0.422

P(x = 4)\\= \binom{4}{4}(0.75)^4(1-0.75)^0 = 0.316

8 0
4 years ago
find a model for simple harmonic motion if the position at t = 0 is 6, the amplitude is 6 centimeters, and the period is 4 secon
Y_Kistochka [10]

Answer:

y = 6cos(π/2)t

Step-by-step explanation:

Given in the question that,

in a simple harmonic motion in which

at t=0 the amplitude is 6 cm, so the simple harmonic motion will be in cosine form. As in case of sine function, the value of function at t=0 is 0.  

And,

the period is given as 4 sec

We know that model equation of simple harmonic motion is

<h3>y = a. cosb(t + c) + d</h3>

here,

a is amplitude

c is Horizontal shift or phase shift

d is Vertical shift

<h3>Step1</h3><h3>Find b</h3>

Period = 2 π / b

4 = 2π / b

b = 2π/4

b = 1π/2

<h3>Step2</h3><h3>Find shifts</h3>

Horizontal and vertical shifts are 0.

So, c = 0 and d = 0

<h3>Step3</h3><h3>Plug those values in the above in the equation</h3>

y = 6cos π/2 (t + 0) + 0

y = 6cos(π/2)t

4 0
4 years ago
Simplify the following expression: 7(2x+ 6y)​
Elza [17]

Answer:

7(2x+ 6y)​ = 14x + 42y

Step-by-step explanation:

give brainllest plz

7 0
3 years ago
Daniel has 2 3/8 pounds of
crimeas [40]

Answer:

NO IF 14 POUND BURGERS

NO IF 1/4 POUND BURGERS

Step-by-step explanation:

2   3/8 POUNDS < 10

10- 2 3/8 = 7 5/8 REQUIRED TO MAKE 10  1 POUND BURGERS

If 1/4 pound burgers then you can just divide 1/4 into 2 3/8

= 2 3/8 / 1/4 = 9.5 BURGERS   = No

Because 10-9.5 = 0.5 burger required

1/2 burger is not equivalent to 1 whole burger.

3 0
3 years ago
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