Answer is C but can't figure it out.

Answer:

x = 34.5

Step-by-step explanation:

x - 15.4 = 19.1

Add 15.4 to both sides.

x - 15.4 + 15.4 = 19.1 + 15.4

x = 34.5

Answer:

x equals -3

Hope this helps :)

Step-by-step explanation:

Answer:

0.6856

Step-by-step explanation:

[tex]\text{The missing part of the question states that we should Note: that N(108,20) model to } \\ \\ \text{ } \text{approximate the distribution of weekly complaints).]}[/tex]

Now; assuming X = no of complaints received in a week

Required:

To find P(77 < X < 120)

Using a Gaussian Normal Distribution ([tex]\mu =[/tex]108, [tex]\sigma[/tex] = 20)

Using Z scores:

[tex]Z = \dfrac{77-108}{20} \\\\ Z = -\dfrac{35}{20} \\ \\ Z -1.75[/tex]

As a result  X = 77 for N(108,20) is approximately equal to  to Z = -1.75 for N(0,1)

SO;

[tex]Z = \dfrac{120-108}{20} \\ \\ Z = \dfrac{12}{20}\\ \\ Z = 0.6[/tex]

Here; X = 77 for a N(108,20) is same to Z = 0.6 for N(0,1)

Now, to determine:

P(-1.75 < Z < 0.6) = P(Z < 0.6) - P( Z < - 1.75)

From the standard normal Z-table:

P(-1.75 < Z < 0.6) = 0.7257 - 0.0401

P(-1.75 < Z < 0.6) = 0.6856

Answer:2440

Step-by-step explanation:

Answer:

No Possible Triangles

Step-by-step explanation:

Deltamath

Answer:

33124 passwords can be created using this format

Step-by-step explanation:

The password will have the following format:

L - L - D - D

There are 26 letters and 7 digits, so the number of possible outcomes in each position is:

26 - 26 - 7 - 7

How many passwords can be created using this format?

26*26*7*7 = 33124

33124 passwords can be created using this format

Answer:

The first term common to both arithmetic sequences: 3

What is the sixth term common to both: 143

Answer:

B

Step-by-step explanation:

Anser B your welcome sorry about the other answer with them not answering correctly  

Answer:

b is the anser

Step-by-step explanation:

Answer:

mode

Step-by-step explanation:

5.7+3.2=8.9

10^8+10^6=10^14

(8.9+10^14)

---

hope it helps

Answer:

ratio

Step-by-step explanation:

Answer:

56.137 Square Unit

Step-by-step explanation:

Rectangle: 7x6=42

1/2 Circle: 1/2x3x3x[tex]\pi[/tex]=14.137

42+14.137=56.137

Answer:

[tex]25\pi[/tex]

Step-by-step explanation:

The formula for the area of a circle is [tex]A=\pi r^{2}[/tex], r is your radius, A is your area, and π is pi (3.1415...). You plug in your radius, or 5 into r, square it, 25, and multiply it by pi. You may be asked to use a certain number of digits of pi, and in that case you multiply for example 3.14 by 25, however [tex]25\pi[/tex] is the exact answer.

Answer:

D

Step-by-step explanation:

Scatter plot (Use excel with any bivariate data you can find)

Answer: 192.. just took the test :)

Step-by-step explanation:

The number of  boxes contains more than 340 nails will be 190. Option B is correct.

The number of standard deviations by which the value of a raw score is above or below the mean value of what is being observed or measured is known as the Z score.

Z score for the 340 nails is found as;

[tex]\rm Z-score= \frac{340-325}{15} \\\\ Z-score=1[/tex]

If the probability of the z score is grater than 1 is;

P(Z≥1)=1-P(Z≤1)

P(Z≥1)=1-0.8413

P(Z≥1)=0.1587

For the 1200 boxes with more than the 340 nails is 192.

Hence,option B is correct.

Learn more about z-score refer:

https://brainly.com/question/21262765

#SPJ2

Answer:

very nice

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

set up an equation:

let h be the number of hours you spent raking.

then, the cost would be 10 + 8 times the number of hours.

In equation form:

[tex]10 + 8h = 42[/tex]

solve:

[tex]10 + 8h = 42\\8h = 32\\h = 4[/tex]

So you worked for 4 hours

Answer:

281 feet

Step-by-step explanation:

Missing part of the question

Some parts of California are particularly earthquake-prone. Suppose that in one metropolitan area, 25% of all homeowners.....................

Answer:

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

[tex]Mean = 1[/tex]

[tex]Pr = 0.2617[/tex]

Step-by-step explanation:

Given

[tex]n = 4[/tex]

[tex]p = 25\%[/tex]

Solving (a): The probability distribution of x

We have:

[tex]n = 4[/tex]

[tex]p = 25\%[/tex] [tex]= 0.25[/tex]

The probability of not having earthquake insurance (q) is:

[tex]q = 1 - p[/tex]

[tex]q = 1 - 0.25[/tex] [tex]= 0.75[/tex]

If x has insurance, then n - x do not.

The distribution follows a binomial pattern. So, the probability distribution is:

[tex]P(X = x) = ^nC_x * 0.25^x * 0.75^{n-x}[/tex]

Substitute 4 for n

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

Solving (b): The most likely value of x i.e. The mean

We have:

[tex]n = 4[/tex] and

[tex]p = 25\%[/tex] [tex]= 0.25[/tex]

[tex]Mean = np[/tex]

[tex]Mean = 4 * 0.25[/tex]

[tex]Mean = 1[/tex]

Solving (c): At least 2 of 4 selected have earthquake insurance.

This is calculated as

[tex]Pr = P(x = 2) + P(x = 3) + P(x = 4)[/tex]

[tex]P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}[/tex]

[tex]P(X=2) = ^4C_2 * 0.25^2 * 0.75^{4-2}[/tex]

[tex]P(X=2) = 6 * 0.25^2 * 0.75^2 = 0.2109375[/tex]

[tex]P(X=3) = ^4C_3 * 0.25^3 * 0.75^{4-3}[/tex]

[tex]P(X=3) = 4 * 0.25^3 * 0.75 = 0.046875[/tex]

[tex]P(X=4) = ^4C_4 * 0.25^4 * 0.75^{4-4}[/tex]

[tex]P(X=4) = 1 * 0.25^4 * 1= 0.00390625[/tex]

So:

[tex]Pr = P(x = 2) + P(x = 3) + P(x = 4)[/tex]

[tex]Pr = 0.2109375 + 0.046875 + 0.00390625[/tex]

[tex]Pr = 0.26171875[/tex]

[tex]Pr = 0.2617[/tex] --- approximated

Answer:

x= -6h

Step-by-step explanation:

opening up the bracket

10x+20h=12x+32h

10x-12x=32h-20h

-2x=12h

x=-6h

Answer:

x=-6h

Step-by-step explanation:

Isolate the variable by diviiding each side by factors that don't contain the variable. Hopefully this is helpful :)

A

Step-by-step explanation:

just listen to me because i know your doing benchmark just like me

Answer:

The width is 32 inches

Step-by-step explanation:

Answer:

Triangular prism with base being an equilateral triangle with side of 9.

Area of equilateral triangle with side a:

Volume:

Surface area:

Answer:

No, the survey doesn't support the researchers claim that people tend to underestimate the duration of a cold. .

Step-by-step explanation:

We are given;

Population mean; μ = 15

Sample mean; x¯ = 14

Standard deviation; s = 0.5

Sample size; n = 352

Null hypothesis; H0: μ = 15

Alternative hypothesis; Ha: μ < 15

Let's find the z-value;

z = (x¯ - μ)/(s/√n)

z = (14 - 15)/(0.5/√352)

z = -1/0.02665

z = -37.5

From online p-value from z-score calculator attached using z = -37.5; significance level of 0.05; one tailed hypothesis, we have;

p-value = 0.00001

But since we want to find out if they underestimate the duration of the cold then;

P(z > 0.00001) = 1 - 0.00001 = 0.99999

Which is approximately 1.

The p-value is greater than the significance level, therefore we fail to reject the null hypothesis and conclude that the survey doesn't support the researchers claim that people tend to underestimate the duration of a cold.

Answer:

The list already says the diameter. Here's the answers for the other stuff though:

A≈201.06

A≈4417.86