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2 years ago

I need help. I do not know if I am wrong or right.

Mathematics

2 answers:

kotykmax [81]2 years ago

7 0

Answer:

I think you are correct

Step-by-step explanation:

Virty [35]2 years ago

7 0

You’re right just saying :)

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Let f(x) =3x-3 and g(x) = 21 evaluate (-25)(-1)

NISA [10]

Use photo math , that will help a lot!!

7 0

2 years ago

The sum of one-fifth of a number and two is five

Veseljchak [2.6K]

Answer:

Step-by-step explanation:

Let us first write an equation where the unknown number is represented with variable x. The sum of a fifth of x and two is five:

$\frac{1}{5} x+2=5$

Great! Let's solve for x by isolating the variable.

$\frac{1}{5}x=3\\x=15$

Therefore, the unknown number is 15.

I hope this helps! Let me know if you have any questions :)

3 0

2 years ago

In a certain college, 33% of the physics majors belong to ethnic minorities. Of 8 students are selected at random from the physi

tiny-mole [99]

Answer: 0.0187

Step-by-step explanation:

The binomial distribution formula for probability :-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where P(x) is the probability of getting success in x trials , n is the total number of trials and p is the probability of getting success in each trial.

Given : The probability that the physics majors belong to ethnic minorities =0.33

Number of students selected : n= 8

Now, the probability that more than 5 belong to an ethnic minority :-

$P(x>5)=P(6)+P(7)+P(8)\\\\=^8C_6(0.33)^6(0.67)^{2}+^8C_7(0.33)^7(0.67)^{1}+^8C_8(0.33)^8(0.67)^{0}\\\\=(\dfrac{8!}{6!2!})(0.33)^6(0.67)^{2}+(8)(0.33)^7(0.67)^{1}+(0.33)^8(0.67)^{0}\\\\=0.0186577086013\approx0.0187$

Hence, the probability that more than 5 belong to an ethnic minority = 0.0187

7 0

2 years ago

PLZZ I need hel if i dont get this done im stuck in the house for a 3 day weekend

Y_Kistochka [10]

Answer:

second one is p^3

Step-by-step explanation:

p^2 is p * p so multiplying another p is p^3

8 0

1 year ago

Which statement is correct?

LiRa [457]

D is the correct answer

6 0

2 years ago