Please help me out with the below question

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

this is only what I know correct me if I'm wrong thank you

Related Questions

How can I calculate this expression?
Find the Unit Rate: Twenty emails in 5 minutes.
Are these proportional. which is
WILL GIVE BRAINLIEST
Divide write the quotient in lowest term 1 1/3 divided by 1 3/4

Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the successes!), whereas the other 70% want a used copy. Consider randomly selecting 15 purchasers.The bookstore has 10 new copies and 10 used copies in stock.
If 15 people come in one by one to purchase this text, what is the probability that all 15 will get the type of book they want from current stock?

Answers

Answer:

The probability that all 15 will get the type of book they want from current stock is 0.4838.

Step-by-step explanation:

Denote the random variable Xas the number of students who want to buy new copy.

The probability of a student wanting to buy a new copy is, P (X) = p = 0.30.

A random sample of n = 15 students is selected.

The random variable X follows a Binomial distribution.

The probability function of a Binomial distribution is:

$P(X=x)={n\choose x}p^(x)(1-p)^(n-x);\ x=0, 1, 2, 3,...$

It is provided that the bookstore has 10 new copies and 10 used copies in stock.

All the 15 students get their desired copy, then this can happen if at most 10 want to buy new copy and at least 5 wants to buy used copy.

Compute the probability of (5 ≤ X ≤ 10) as follows:

P (5 ≤ X ≤ 10) = P (X = 5) + P (X = 6) + P (X = 7) + P (X = 8) + P (X = 9) + P (X = 10)

$={15\choose 5}(0.30)^(5)(1-0.30)^(15-5)+{15\choose 6}(0.30)^(6)(1-0.30)^(15-6)\n+{15\choose 7}(0.30)^(7)(1-0.30)^(15-7)+{15\choose 8}(0.30)^(8)(1-0.30)^(15-8)\n+{15\choose 9}(0.30)^(9)(1-0.30)^(15-9)+{15\choose 10}(0.30)^(10)(1-0.30)^(15-10)\n=0.2061+0.1472+0.0811+0.0348+0.0116+0.0030\n=0.4838$

Thus, the probability that all 15 will get the type of book they want from current stock is 0.4838.

Simplify your answer

Answers

Answer:

= F^2 x^2

Step-by-step explanation:

(F(x))^2

Apply the rule: (a) =a (x) = x

= (Fx)^2

Apply exonent rule: (a . b)^n = a^n b^n (Fx)^2 = F^2 x^2

= F^2 x^2

Solve each system by substitution
2x-5y=22
y=4x+22

Answers

Answer:

Point Form (graph) : ( − 22/ 3 , − 22/ 3 )

Equation Form: x = − 22/ 3 , y = − 22/ 3

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Question 3 (1 point)What is the value of x in the equation 8+4 = 2(x - 1)?
a
11/2
b
13/2
c
5
d
7

Answers

Answer:

D. 7

Step-by-step explanation:

(8+4) = 2(x-1) multiply (x-1) by 2

(8+4) = 2x-2 add 8 and 4

12 = 2x-2 add 2 on both sides

14 = 2x divide both sides by 2

7 = x

Answer is D

12 = 2x - 2

14 = 2x

14/2 = x

7 = x

I need help with math

Answers

How can I help you?

You earn $28 for washing 4 cars. How much do you earn for washing 3 cars?

Answers

Answer:

$21

Step-by-step explanation:

Answer:

Step-by-step explanation:

First, find the unit rate for 4 cars. 28 divided by 4 equals 7. Then, just multiply 7 by 3 and you get 21

Other Questions

11 m 40 cm + 58 m 30 cm

Question 11 ptsA basket of laundry is being separated. Divide 48 pieces of clothing into 2 groups so the ratio is 1 to 3. Group of answer choices 12 pieces & 36 pieces or 24 pieces & 24 pieces or No answer text provided. or 14 pieces & 34 pieces

HELP ME PLZ THXxx u

AJ, Blaze, Laurence, and Jack pick oranges. Blaze picks three times as many as Laurence. Jack picks twice as many as Blaze. Aj picks three times as many as Laurence. The total weight of the oranges is 1092 pounds. How many pounds does AJ pick?