Solve for the value of n.

pls help I will give brainliest + 34 points!

Answer

Step-by-step explanation:

Answer:

17.7

Step-by-step explanation:

[tex]a^{2} =29^{2} -23^{2} \\a=\sqrt{312} \\=17.6635[/tex]

Answer:

a.) f(x) = [tex]\frac{1}{30}[/tex] where 90 < x < 120

b.) [tex]\frac{2}{3}[/tex]

c.)  [tex]\frac{2}{3}[/tex]

d.)  [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Let

X be a uniform random variable that denotes the actual charging time of battery.

Given that, the actual recharging time required is uniformly distributed between 90 and 120 minutes.

⇒X ≈ ∪ ( 90, 120 )

a.)

Probability density function , f (x) = [tex]\frac{1}{120 - 90} = \frac{1}{30}[/tex] where 90 < x < 120

b.)

P(x < 110) = [tex]\int\limits^{110}_{90} {\frac{1}{30} } \, dx[/tex]

               = [tex]\frac{1}{30}[x]\limits^{110}_{90} = \frac{1}{30} [ 110 - 90 ] = \frac{1}{30} [ 20] = \frac{2}{3}[/tex]

c.)

P(x > 100 ) = [tex]\int\limits^{120}_{100} {\frac{1}{30} } \, dx[/tex]

                 = [tex]\frac{1}{30}[x]\limits^{120}_{100} = \frac{1}{30} [ 120 - 100 ] = \frac{1}{30} [ 20] = \frac{2}{3}[/tex]

d.)

P(95 < x< 110)  = [tex]\int\limits^{110}_{95} {\frac{1}{30} } \, dx[/tex]

                       = [tex]\frac{1}{30}[x]\limits^{110}_{95} = \frac{1}{30} [ 110 - 95 ] = \frac{1}{30} [ 15] = \frac{1}{2}[/tex]

Answer:

Using the formulas

V=4

3πr3

d=2r

Solving forV

V=1

6πd3=1

6·π·43≈33.51032in³

Answer:

16

Step-by-step explanation:

We can rewrite this as 125/100 · x = 20

This works because a percentage is out of 100, which means 125% is 125/100. "Of" usually means multiplied, and "what number" is the variable.

Now we can simplify this

125/100 · x = 20

5/4 · x = 20

x = 16

Answer:

y = (x + 3)² - 1

Step-by-step explanation:

Answer:Option A -

Step-by-step explanation:

Answer:

25 7 x 5 is 35

Step-by-step explanation:

hope this helps have a good rest of your afternoon :) ❤

Answer:

5 times 5 is 25.

Step-by-step explanation:

Hope this helps you dude

s h r e k (in a maid outfit)

Step-by-step explanation:

The total is 37000.

Hope it helps for your education

Simplify answer

4 in the 42,672.

4 in the 37,426 isn't greater since 4 on 42. is 10 thousands than 37,426

Step-by-step explanation:

they can all get 3 slices of pizza

$1400 = $4000 × 7 × r / 100

$1400 = 28000 × r / 100

$ 1400 = $ 280 × r

rate = $1400 ÷ $ 280

rate = 5

Answer:

b= 1.1

Step-by-step explanation:

193b= 212.3

divide both sides by 193 to isolate b

212.3÷193=1.1

Answer:

b=1 .1

Step-by-step explanation:

Answer:

6 books per month

Step-by-step explanation:

because 6x10 equals 60

Answer:

He ate it or he may have ate some in some packs then refilled the other packs.

Step-by-step explanation:

Answer:

Someone else ate them!

Answer:

x:y

1:15

2:30

3:45

4:60

5:75

Step-by-step explanation:

Answer:

29.8–34.2 hours

Step-by-step explanation:

Empirical Rule:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Population:

Mean of 32, standard deviation of 2.5.

Sample:

Sample of 5, so [tex]n = 5, s = \frac{2.5}{\sqrt{5}} = 1.1[/tex]

There is about a 95% probability that the sample mean will fall in which interval?

Within 2 standard deviations of the mean. So

32 - 2*1.1 = 32 - 2.2 = 29.8

32 + 2*1.1 = 32 + 2.2 = 34.2 hours

Answer:

Explained below.

Step-by-step explanation:

A) We are not given a population percentage of people who wear dark or light clothes. For example, the number of people wearing dark cloths were maybe 700 and only 100 were killed.

So using the percentage of those killed to draw a conclusion is not a true representation of the reality. Thus, it is not justified to conclude that it is safer to wear light-colored clothing at night.

B) The additional information needed will be the population percentage of all pedestrians both those killed and those not killed who wore light-colored and dark colored clothing at night.

Answer:

No

Step-by-step explanation:

A package has 6 cookies for $2.49

Ms. Morgan has 19 students. She wants to give each student 2 cookies, which means each package is enough for 3 students.

19 students × 2 cookies = 38 cookies is what you need

7 packages times $2.49 = $17.43

7 packages × 6 cookies = 42 cookies

42 cookies ÷ 19 students = 2.21 cookies for each student

Using compound interest, the total amount accrued, principal plus interest, with compound interest on a principal of $3,145.00 at a rate of 4.125% per year compounded 1 times per year over 4.5 years is $3,772.40.

Interest that is accrued on both principal and previous interest is known as compound interest. As a result, it is often referred to as "interest over the interest". Here, the principal is increased by the interest that has already accrued, and the resulting sum serves as the new principal for the subsequent period. i.e., compound interest is equal to interest on the principal plus interest on interest already paid.

First, convert R as a percent to r as a decimal.

r = R/100

r = 4.125/100

r = 0.04125 rate per year,

Then solve the equation for A

A = P [tex](1 + r/n)^{nt}[/tex]

A = 3,145.00 [tex](1 + 0.04125)^{4.5}[/tex]

A = $3,772.40

The total amount accrued, principal plus interest, with compound interest on a principal of $3,145.00 at a rate of 4.125% per year compounded 1 times per year over 4.5 years is $3,772.40.

To know more about compound interest, visit:

https://brainly.com/question/14295570

#SPJ1

Answer:

Step-by-step explanation:

Answer:

4 hrs

Step-by-step explanation:

65-5=60

60/15=4

4 hrs

Answer:

B) x + 14 = 20

Step-by-step explanation:

The "X" is the change. And the change has to equal 20. So it would be 6 + 14, since thats the only number that equals 20.

Therefore, it is B) x + 14 = 20.

Answer:

Please find attached pdf

Step-by-step explanation:

Answer:

1. think about something else

2. talk to people

3. do something that you want to do

Answer:

1.) Snacks! Eat a snack during your most boring class, if you can.

2.) Daydream. Days go by for me so fast, as I'm a huge daydreamer, imagining my perfect life.

3.) Doodle. I have a friend who doodles all the time during class.

4.) Read.

5.) Music.

6.) Bathroom.

7.) Do homework.

(Brainliest please! :D)