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5/10 of the students in sams class are girls of the girls 1/5 of them wear glasses what fraction of the students wear glasses

Hey I dont know that answer but if you download Gaumath and take a picture of the problem the tutors on there will help you for free

It necessary to apply the finite population correction factor (FPC) when a sample is a significant part of the population because for more than 5% of finite population the standard error in the estimated value will come to be too big.

The formula of FPC is

FPC =\(\sqrt{ (N-n)/(N-1)}\)

where N= population size

           n= sample size

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Answer:

H(x) = (x - 5) * (1 - 0.25) = x - 5 - 0.25x = 0.75x - 5

Answer:

The function H(x) that represents how much you would pay if you use the mall coupon followed by applying the discount from the store would be:

H(x) = (x - 5) * 0.75

Step-by-step explanation:

First, we apply the mall coupon by subtracting $5 from the original cost of the jeans represented by x. This gives us the function f(x) = x - 5.

Next, we apply the store discount of 25% by multiplying the result of f(x) by 0.75. This is because 25% expressed as a decimal is 0.25, and to apply a discount, we multiply by the decimal form of the percentage (1 - decimal form).

So, the final function H(x) represents the cost of the jeans after both the mall coupon and store discount have been applied, and is equal to (x - 5) * 0.75.

Answer:

$142.5

Step-by-step explanation:

225-60=165

165/2=82.5

82.5+60=142.5

Answer:

What exactly is your question?

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Given

n² - n - 42

Consider the factors of the constant term (- 42) which sum to give the coefficient of the n- term (- 1)

The factors are - 7 and + 6 , since

- 7 × + 6 = - 42 and - 7 + 6 = - 1 , then

n² - n - 42 = (n - 7)(n + 6) ← in factored form

Solution :-

Given,

We need to factorise it.

So let's start !!

Two factors are -7 and 6.

Therefore,

The magnitudes of the forces P and R are 35N and 60.621 N respectively.

Given two forces P N and 70 N having 120° between them and R

Let us assume 70N as Q,

Angle between P and Q = \(\alpha\) = 120°

Angle between P and R = β = 90°

Firstly let us find out the magnitude of P.

By Parallelogram law of vector addition,

tanβ = (QsinФ)/(P+QcosФ)

tan90°= (70 sin120°)/ (P+ 70cos120°)

1/0 = (70 sin120°)/ (P+ 70cos120° )

( cos120° = -0.5  )

P = 35N

Now the resultant of P and Q is R, let us find the magnitude of R.

The resultant of two vectors is given by parallelogram law of vector addition by,

\(R=\sqrt{P^2+Q^2+2PQcos\alpha }\)

\(R = \sqrt{35^2+70^2+2(35)(70)(-0.5)}\\ R = \sqrt{1225+4900-2450}\)

R= 60.621 N

Magnitude of P is 35 N.

Magnitude of R is 60.621 N.

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Answer:

57 degrees

Step-by-step explanation:

value of x = 29

Answer:

57

Step-by-step explanation:

(4x + 7) + (2x -1) = 180

6x + 6 = 180

6x = 174

x = 29

(2(29) -1 )

(58 - 1)

(57)

The perimeter of the picnic area is 107 yards

A triangular picnic area has the side lengths of 45, 31 and 31 yards; To the nearest yard, what amount of fencing is needed to surround the perimeter of the picnic area? 95 yards 107 yards 160 yards 190 yards

From the complete question, we have:

Shape: Triangle

Side lengths = 45 yards, 31 yards, 31 yards

The perimeter is the sum of the side lengths.

So, we have:

Perimeter = 45 + 31 + 31

Evaluate

Perimeter = 107

Hence, the perimeter of the picnic area is 107 yards

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Answer:B

Step-by-step explanation:

107 Yards

Answer:55%

Step-by-step explanation:

1264/2300 ?/100

1264*100= 126400

126400/2300= 54.95 then round and get 55

Answer:

the answer is x = 39

Step-by-step explanation:

102 + 39 + x = 180

141 + x = 180

x = 180 - 141

x = 39°

Answer:

Question 10: True

Question 11: You move the points by their instructions. Did you forget to incorperate that into your question?

Answer:

x=31

Step-by-step explanation:

you just have to add the two equations to equal 180 because it's they're supplementary angles.

(25+x)+4x=180

25+x+4x=180

25+5x=180

5x=155

x=31

Answer:

(25+x)+4x=180°

25+x+4x=180°

5x=180-25

5x=155

x=155/5

x =31

This may be wrong I am not sure so let me know... (edited)

h(4)=−28

Explanation:

If h(n)=−2n2+4

then h(4)=−2(4)2+4

=−2×16+4

=−32+4

=−28

Answer:

let cost of washer be x

cost of dryer be $745-x

we have

cost of washer =$95+($745-x)

x=$95+$745-x

x+x=$840

2x=$840

x=$840/2=$420

the cost of washer =$420

=$745-x=$745-420=$325

$325 is the cost of dryer.

Answer:

D

Step-by-step explanation:

The rest you can elimate because of obvious inferring and reasoning so process of elimination

Answer:

Step-by-step explanation:

(a) To find the probability that it is raining when you arrive in Oneirabad on a random day, we need to use the law of total probability.

Let A be the event that it is raining, and B be the event that it is the Wet season.

P(A) = P(A|B)P(B) + P(A|B')P(B')

Given that the Wet season lasts for 1/3 of the year, we have P(B) = 1/3. The probability that it is raining during the Wet season is 3/4, so P(A|B) = 3/4.

The Dry season lasts for 2/3 of the year, so P(B') = 2/3. The probability that it is raining during the Dry season is 1/6, so P(A|B') = 1/6.

Now we can calculate the probability that it is raining when you arrive:

P(A) = (3/4)(1/3) + (1/6)(2/3)

= 1/4 + 1/9

= 9/36 + 4/36

= 13/36

Therefore, the probability that it is raining when you arrive in Oneirabad on a random day is 13/36.

(b) Given that it is raining when you arrive, we can use Bayes' theorem to calculate the probability that your visit is during the Wet season.

Let C be the event that your visit is during the Wet season.

P(C|A) = (P(A|C)P(C)) / P(A)

We already know that P(A) = 13/36. The probability that it is raining during the Wet season is 3/4, so P(A|C) = 3/4. The Wet season lasts for 1/3 of the year, so P(C) = 1/3.

Now we can calculate the probability that your visit is during the Wet season:

P(C|A) = (3/4)(1/3) / (13/36)

= 1/4 / (13/36)

= 9/52

Therefore, given that it is raining when you arrive, the probability that your visit is during the Wet season is 9/52.

(c) Given that it is raining when you arrive, the probability that it will be raining when you return to Oneirabad in a year's time depends on the season. If you arrived during the Wet season, the probability of rain will be different from if you arrived during the Dry season.

Let D be the event that it is raining when you return.

If you arrived during the Wet season, the probability of rain when you return is the same as the probability of rain during the Wet season, which is 3/4.

If you arrived during the Dry season, the probability of rain when you return is the same as the probability of rain during the Dry season, which is 1/6.

Since the season you arrived in is independent of the weather when you return, we need to consider the probabilities based on the season you arrived.

Let C' be the event that your visit is during the Dry season.

P(D) = P(D|C)P(C) + P(D|C')P(C')

Since P(C) = 1/3 and P(C') = 2/3, we can calculate:

P(D) = (3/4)(1/3) + (1/6)(2/3)

= 1/4 + 1/9

= 9/36 + 4/36

= 13/36

Therefore, the probability that it will be raining when you return to Oneirabad in a year's time, given that it is raining when you arrive, is 13/36.

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The statement implies that no matter how many peanuts and raisins are exchanged between Bob and Mark, they will always end up with an equal number of each. This suggests that the quantity of peanuts and raisins each person initially possesses is irrelevant to the final outcome.

This situation can be illustrated by the concept of a fair trade. If Bob and Mark exchange peanuts and raisins in such a way that the quantity exchanged maintains an equal number of each item for both individuals, the result will always be a balanced distribution.
For example, if Bob initially has 5 peanuts and 3 raisins, and Mark has 2 peanuts and 4 raisins, they can exchange 2 peanuts for 2 raisins. After the exchange, Bob will have 3 peanuts and 5 raisins, while Mark will have 4 peanuts and 2 raisins. The overall result is still an equal number of each item for both individuals.
This statement highlights the idea of fairness in the exchange of goods, where regardless of the initial quantities, the outcome ensures equality between the participants.

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Answer:

I think it is complement. Not so sure so sorry If i get it wrong I haven't done this in 2 or 3 years

Step-by-step explanation:

The answer is not one of the options listed. The closest option is (a) 9 * 8 * 7 * 5, but this does not take into account the requirement that the last digit must be odd.

To solve this problem, we can use the multiplication principle, which states that if there are m ways to do one thing and n ways to do another thing, then there are m * n ways to do both things together.

First, we need to choose the last digit of the PIN to be odd. There are 5 odd digits to choose from (1, 3, 5, 7, and 9).

Next, we need to choose the first digit of the PIN. Since it cannot be the same as the last digit, there are only 9 choices left (since 0 is allowed as the first digit).

For the second digit, we can choose from 8 digits (we can't choose the first digit or the last digit, which leaves 8 choices).

For the third digit, we can choose from 7 digits (we can't choose the first digit, the second digit, or the last digit, which leaves 7 choices).

Therefore, the total number of choices for the PIN is:

5 * 9 * 8 * 7 = 2,520

So the answer is not one of the options listed. The closest option is (a) 9 * 8 * 7 * 5, but this does not take into account the requirement that the last digit must be odd.

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In a residual plot if the linearity assumption is the points are scattered and there is no obvious pattern.

Residual plot:

in statistics, residual value is a measure of how much a regression line vertically misses a data point.

Given,

Here we need to find what would you expect to see in a residual plot if the linearity assumption is correct.

As per the definition of residual plot, there is no obvious pattern for this plot and the positive and negative values are evenly spread across the whole range.

Therefore, in the regression line there are some points are misses the line on the vertical base.

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The mean of the time taken by a mechanic to rebuild the transmission of 2005 Chevrolet Cavalie μ = 8.4 hours The standard deviation of the time taken by a mechanic to rebuild the transmission of 2005 Chevrolet Cavalier, σ = 1.8 hours.

The sample size, n = 40 We have to find the probability that their mean rebuild time exceeds 8.7 hours. We know that the sampling distribution of the sample means is normally distributed with the following mean and standard deviation.

We have to find the probability that the sample mean rebuild time exceeds 8.7 hours or Now we need to standardize the sample mean using the formula can be found using the z-score table or a calculator. Therefore, the probability that the mean rebuild time of 40 mechanics exceeds 8.7 hours is 0.1489.

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a. The selling price per litre of oil is $2.91.

b.The rate of markup based on cost is 46.23%

a) Selling price per litreLet selling price be S, and cost price be C,

Mark up percentage= 46%

Cost price= $1.99

ThereforeS= C + 0.46CC

= $1.99S = $1.99 + 0.46($1.99)S

= $1.99 + $0.9154S = $2.9054

Therefore the selling price per litre of oil is $2.91.

Answer: $2.91

b) Rate of markup based on cost

We can use the formula to calculate the rate of markup based on the cost:

Mark up percentage based on cost

= Mark up/ Cost price * 100Mark up= Selling price - Cost priceMark up= $2.91 - $1.99Mark up= $0.92

ThereforeMark up percentage based on cost

= Mark up/ Cost price * 100Mark up percentage based on cost= 0.92/ 1.99 * 100Mark up percentage based on cost= 46.23%

Therefore the rate of markup based on cost is 46.23%.Answer: 46.23%.

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The selling price per liter is approximately $3.6852.

The rate of markup based on cost is approximately 86.53%.

To find the selling price per liter and the rate of markup based on cost, we can use the given information.

a) Selling Price per Liter:

The selling price per liter can be calculated by adding the markup to the cost price.

Markup = 46% of Selling Price

Cost Price = $1.99

Let's assume the selling price per liter is SP. The markup can be expressed as 46% of SP, which is 0.46 * SP.

The selling price per liter can be obtained by adding the markup to the cost price:

SP = Cost Price + Markup

SP = $1.99 + 0.46 * SP

Now, we can solve this equation to find the value of SP.

SP - 0.46 * SP = $1.99

0.54 * SP = $1.99

SP = $1.99 / 0.54

SP ≈ $3.6852

Therefore, the selling price per liter is approximately $3.6852.

b) Rate of Markup based on Cost:

The rate of markup based on cost can be calculated by dividing the markup by the cost price and then multiplying by 100%.

Markup = 46% of Selling Price

Cost Price = $1.99

Rate of Markup based on Cost = (Markup / Cost Price) * 100%

Let's substitute the values:

Rate of Markup based on Cost = (0.46 * SP / Cost Price) * 100%

Rate of Markup based on Cost = (0.46 * $3.6852 / $1.99) * 100%

Rate of Markup based on Cost ≈ 86.53%

Therefore, the rate of markup based on cost is approximately 86.53%.

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The approximate probability that the average price for 16 gas stations is over $4.69 is equals to the almost zero. Therefore, correct answer is option (a).

Under statistics, a z-score or standard score is used to identify how far from the population mean a given data point or raw score is. The following variation of the z-score formula,

z= ( x −μ)/σ/√n

Where, x--> observation score

μ-->mean

σ--> standard deviation

n--> number of sample

We have cost of unleaded gasoline in the area once will follow an unknown distribution,

Mean, μ= $4.59

Standard deviations, σ = $0.10

Sample size, n = 16

Observed value, x = $4.69

We have to calculate approximate probability for average price for 16 gas stations is over $4.69, i.e., P(x >4.69). Using the z-score formula,

P( (x −μ)/σ/√n > ( 4.69 - 4.59)/0.10/√16)

=> P(z > (4.69- 4.59)/0.10/√16)

=> P(z > 0.10/0.10/√16)

=> P(z >4) = 1 - P( z< 4)

Using the z-table, the approximate value of P(z < 4 ) is 0.999. Also, P( x> 4.69 )

= P( z>4) = 1 - 0.999 ~ 0.

Hence, required probability is almost zero.

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Answer:

a. 3:45 a.m. = 3:345

b. 9:16 a.m. = 9:16

c. 12 ( midnight ) = 00:00

d. 12 ( noon ) = 12:00

Answer:

x=8 and y=23

Step-by-step explanation:

Rewrite equations:

y=2x+7;y=3x−1

Step: Solve y=2x+7 for y:

y=2x+7

Step: Substitute 2x+7 for y in y=3x−1:

y=3x−1

2x+7=3x−1

2x+7+−3x=3x−1+−3x(Add -3x to both sides)

−x+7=−1

−x+7+−7=−1+−7(Add -7 to both sides)

−x=−8−x−1=−8−1

(Divide both sides by -1)

x=8

Step: Substitute 8 for x in y=2x+7:

y=2x+7

y=(2)(8)+7

y=23(Simplify both sides of the equation)

Answer:

6.25 in

Step-by-step explanation:

25/3= 8.33

8.33*.75= 6.25

Answer:

24 cm

Step-by-step explanation:

the perimeter is the circumference, the way to go one time fully around the object.

now think, what distances do you have to go when walking around a rectangle ?

well, there are 2 times the length and 2 times the width or breadth. that's it.

P = 2×7 + 2×5 = 14 + 10 = 24 cm

Answer:

1. 75

2. 480 people

Step-by-step explanation:

1. 450/2 = 225

300 - 225 = 75

2. 20 * 3 = 60

12 * 35 = 420

420 + 60 = 480