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
Evgesh-ka [11]
3 years ago
11

Plz help me answer the whole page

Mathematics
1 answer:
dangina [55]3 years ago
8 0
#2 5.88 #3 6.510 #4 7.578 #5 9.835 #6 11.910 #7 3.72
You might be interested in
Question 13 PLEASE HELP Find the x-intercept of -x +2y =6. X-intercept: (___,0)
aivan3 [116]

Answer:

(-6,0)

Step-by-step explanation:

The x intercept is when y = 0.

So, -x +2(0) = 6

-x = 6

x = -6

8 0
3 years ago
Read 2 more answers
(4.89 +12.52 + 2(-2.5)
fiasKO [112]

Answer:  12.41

Step-by-step explanation:

1st  2 times -2.5

add all the terms left together.

4 0
3 years ago
Which is the angle of depression from the lighthouse on the boat ?
Anastaziya [24]

Answer:

∠4

Step-by-step explanation:

An angle of depression is measured from the horizontal downwards.

This is ∠4 in the diagram

8 0
3 years ago
Read 2 more answers
In a particular faculty 60% of students are men and 40% are women. In a random sample of 50 students what is the probability tha
zimovet [89]

Answer:

a) The expected value is given by:

E(X) = np = 50*0.4 = 20

and the variance is given by:

Var(X) =np(1-p) = 50*0.4*(1-0.4) = 12

b) P(X>25)= 1-P(X\leq 25)

And we can find this probability with the following Excel code:

=1-BINOM.DIST(25,50,0.4,TRUE)

And we got:

P(X>25)= 1-P(X\leq 25)=0.0573

c) 1) Random sample (assumed)

2) np= 50*0.4= 20 >10

n(1-p) =50*0.6= 30>10

3) Independence (assumed)

Since the 3 conditions are satisfied we can use the normal approximation:

X \sim N(\mu = 20 , \sigma= 3.464)

d) P(X>25) = 1-P(Z< \frac{25-20}{3.464}) = 1-P(z

e) P(X>25)= P(X>25.5) = 1-P(X \leq 25.5)

P(X>25)= P(X>25.5) = 1-P(X \leq 25.5)= 1-P(Z

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=50, p=0.4)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

Part a

The expected value is given by:

E(X) = np = 50*0.4 = 20

and the variance is given by:

Var(X) =np(1-p) = 50*0.4*(1-0.4) = 12

Part b

For this case we want to find this probability:

P(X>25)= 1-P(X\leq 25)

And we can find this probability with the following Excel code:

=1-BINOM.DIST(25,50,0.4,TRUE)

And we got:

P(X>25)= 1-P(X\leq 25)=0.0573

Part c

1) Random sample (assumed)

2) np= 50*0.4= 20 >10

n(1-p) =50*0.6= 30>10

3) Independence (assumed)

Since the 3 conditions are satisfied we can use the normal approximation:

X \sim N(\mu = 20 , \sigma= 3.464)

Part d

We want this probability:

P(X>25) = 1-P(Z< \frac{25-20}{3.464}) = 1-P(z

Part e

For this case we use the continuity correction and we have this:

P(X>25)= P(X>25.5) = 1-P(X \leq 25.5)

P(X>25)= P(X>25.5) = 1-P(X \leq 25.5)= 1-P(Z

4 0
3 years ago
Please help tysm ill mark brainliest
liraira [26]

Answer:

use pemdas(order of the operations)and you'll get the answer 27!!

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Stella can earn a prize from the media center if she completes a 192 page book in 12 days how many pages should Stella read each
    11·2 answers
  • Need help asap! Need to find the value of x
    5·2 answers
  • Find the range and the first and third quartiles for the data set. 45,42,86,13,74,47,46
    14·1 answer
  • 2) WILL MARK BRAINLIEST + 10 POINTS! :)
    15·1 answer
  • Decide if the function is an exponential function. If it is, state the intial value and the base. y = 5 ^ x
    13·1 answer
  • Write and solve an equation to find the value of x. PLS HELP!!
    7·2 answers
  • Maricella solves for x in the equation 4 x minus 2 (3 x minus 4) + 4 = negative x + 3 (x + 1) + 1. She begins by adding –4 + 4 o
    9·2 answers
  • Solve m1 and m2 In the diagram<br><br> Please help me solve Im so confused
    11·2 answers
  • Find f'(7), the derivative of f(x)= Square root x + 2 at X=7, using the LIMIT definition.
    10·1 answer
  • Eight and two fourths minus three and one third = ___
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!