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3 years ago

5 1⁄3 ÷ 2 2⁄7. Porasseee heppp

Mathematics

1 answer:

Vsevolod [243]3 years ago

3 0

Answer:

Simple Division. See explanation.

Step-by-step explanation:

Simply put, 5 1/3 divided by 2 2/7 is 2.333333 (continues on forever)

This in fraction form however is 2 1/3.

Final answer: 2 1/3 in fraction form, and 2.333 in decimal.

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The average telephone bill in a locality is $70, with a standard deviation of $40. In a sample of 50 randomly selected phone con

Sever21 [200]

Using the normal distribution, there is a 0.1894 = 18.94% probability that the sample average will exceed $75.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

The parameters for this problem are given as follows:

$\mu = 70, \sigma = 40, n = 50, s = \frac{40}{\sqrt{50}} = 5.66$

The probability that the sample average will exceed $75 is <u>one subtracted by the p-value of Z when X = 75,</u> hence:

$Z = \frac{X - \mu}{\sigma}$

By the Central Limit Theorem

$Z = \frac{X - \mu}{s}$

Z = (75 - 70)/5.66

Z = 0.88

Z = 0.88 has a p-value of 0.8106.

1 - 0.8106 = 0.1894.

0.1894 = 18.94% probability that the sample average will exceed $75.

More can be learned about the normal distribution at brainly.com/question/28096232

#SPJ1

3 0

1 year ago

Write the expression in complete factored form.

ivolga24 [154]

Answer:

(x - 6) • (4x - y)

Step-by-step explanation:

brainly???

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(4x • (x - 6)) - y • (x - 6)

Step 2 :

Equation at the end of step 2 :

4x • (x - 6) - y • (x - 6)

Step 3 :

Pulling out like terms :

3.1 Pull out x-6

After pulling out, we are left with :

(x-6) • ( 4x * 1 +( y * (-1) ))

Final result :

(x - 6) • (4x - y)

4 0

2 years ago

3(x-3)+4=3x-5<br> This question has how many solutions

Licemer1 [7]

All real numbers are solutions, let me know if you need an explanation luv

7 0

2 years ago

The value V of a certain automobile that is t years old can be modeled by V(t) = 14,651(0.81). According to the model, when will

lakkis [162]

Answer:

a) The car will be worth $8000 after 2.9 years.

b) The car will be worth $6000 after 4.2 years.

c) The car will be worth $1000 after 12.7 years.

Step-by-step explanation:

The value of the car after t years is given by:

$V(t) = 14651(0.81)^{t}$

According to the model, when will the car be worth V(t)?

We have to find t for the given value of V(t). So

$V(t) = 14651(0.81)^{t}$

$(0.81)^t = \frac{V(t)}{14651}$

$\log{(0.81)^{t}} = \log{(\frac{V(t)}{14651})}$

$t\log{(0.81)} = \log{(\frac{V(t)}{14651})}$

$t = \frac{\log{(\frac{V(t)}{14651})}}{\log{0.81}}$

(a) $8000

V(t) = 8000

$t = \frac{\log{(\frac{8000}{14651})}}{\log{0.81}} = 2.9$

The car will be worth $8000 after 2.9 years.

(b) $6000

V(t) = 6000

$t = \frac{\log{(\frac{6000}{14651})}}{\log{0.81}} = 4.2$

The car will be worth $6000 after 4.2 years.

(c) $1000

V(t) = 1000

$t = \frac{\log{(\frac{1000}{14651})}}{\log{0.81}} = 12.7$

The car will be worth $1000 after 12.7 years.

5 0

2 years ago

Stanley McBride is employed by the True Blue company. The PPO annual premium is $7,058. His employer pays 70% of the total cost.

Vitek1552 [10]

First deducte his contribution
7,058−7,058×0.70
=2,117.4
Then find weekly deduction
2,117.4÷52
=40.72

4 0

3 years ago

Read 2 more answers