Can someone help me???

Answer:

4 minutes

Step-by-step explanation:

40=1 min

40=2 min

40=3 min

40=4 min

40x4 or 40+40+40+40 is 160

Answer:

Question number 1: Correlation = no. Causation = no.

Question number 2: Correlation = yes. Causation = no.

Question number 3: Correlation = yes. Causation = yes.

Step-by-step explanation:

Happy to help!

We reject the null hypothesis. If the p-value is greater than or equal to 0.01, we fail to reject the null hypothesis. Alternative Hypothesis (H1): p1 > p2

a) The null and alternative hypotheses for testing whether p1 > p2 are:

Null Hypothesis (H0): p1 <= p2

Alternative Hypothesis (H1): p1 > p2

b) To determine the test statistic, we can calculate the test statistic z using the formula:

z = (p1 - p2) / sqrt(p(1-p)(1/n1 + 1/n2))

where p1 and p2 are the sample proportions, and n1 and n2 are the sample sizes.

First, we need to calculate the sample proportions:

P1 = x1 / n1 = 121 / 249

P2 = x2 / n2 = 131 / 301

Next, we calculate the test statistic using the formula above.

c) To determine the p-value, we compare the test statistic z to the standard normal distribution. Since the alternative hypothesis is one-sided (p1 > p2), we are interested in the right-tail area of the standard normal distribution.

By looking up the p-value corresponding to the test statistic z in the standard normal distribution table or using statistical software, we can determine the probability of observing a test statistic as extreme as the one calculated under the null hypothesis.

d) If the p-value is less than the significance level (α), we reject the null hypothesis. If the p-value is greater than or equal to α, we fail to reject the null hypothesis.

To determine whether to reject or fail to reject the null hypothesis, compare the p-value obtained in step c) to the significance level (α = 0.01). If the p-value is less than 0.01, we reject the null hypothesis. If the p-value is greater than or equal to 0.01, we fail to reject the null hypothesis.

In summary, you would need to calculate the test statistic (z), determine the p-value, and compare it to the significance level (α = 0.01) to make a decision on rejecting or failing to reject the null hypothesis.

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The interpolations;

(a) 81st

= NORM.INV(0.81;0;1)

0.878

(b) 19th

=NORM.INV(0.19;0;1)

-0.878

(c) 76th

=NORM.INV(0.76;0;1)

0.706

(d) 24th

=NORM.INV(0.24;0;1)

-0.706

(e) 11th

=NORM.INV(0.11;0;1)

-1.227

Given,

Data near the mean are more likely to occur than data distant from the mean, according to the normal distribution, which is a probability distribution that is symmetric around the mean.

"A numerical measurement used in statistics of a value's relationship to the mean (average) of a set of values, assessed in terms of standard deviations from the mean," according to Wikipedia, is the Z-score.

For this case we can find the percentiles with the Norm.inv function in Excel and we got:

(a) 81st

= NORM.INV(0.81;0;1)

0.878

(b) 19th

=NORM.INV(0.19;0;1)

-0.878

(c) 76th

=NORM.INV(0.76;0;1)

0.706

(d) 24th

=NORM.INV(0.24;0;1)

-0.706

(e) 11th

=NORM.INV(0.11;0;1)

-1.227

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We need to multiply the possible values of H (0, 1, 2, and 3) by their corresponding probabilities and then add the products together. The resulting sum will be the expected value of H, expressed in the units of the random variable (in this case, "heads").

Explanation:

The probability distribution for H (the number of coins that land showing "heads") when three coins are flipped is:

H = 0 with probability 1/8

H = 1 with probability 3/8

H = 2 with probability 3/8

H = 3 with probability 1/8

To find the expected value of H, we need to multiply each possible value of H by its corresponding probability and then add the products together. So:

E(H) = (0 x 1/8) + (1 x 3/8) + (2 x 3/8) + (3 x 1/8)

E(H) = 0 + 3/8 + 6/8 + 3/8

E(H) = 12/8

E(H) = 1.5

Therefore, the expected value of the number of coins that land showing "heads" when three coins are flipped is 1.5 "heads". This means that on average, we can expect 1.5 of the three coins to land showing "heads" when they are flipped.

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45 billion Korean Won is equal to 45 million US Dollars.

The formula for  (USD) is USD = KRW / 1000. To calculate 45 billion won in USD, we must first convert KRW to USD. 45 billion KRW is equal to 45,000,000,000 KRW. Using the formula above, we can calculate the amount of USD:

USD = 45,000,000,000 KRW / 1000

USD = 45,000,000 USD

Therefore, 45 billion won is equal to 45 million US Dollars.

To better understand this conversion, it is important to remember that one US Dollar is equal to 1000 Korean Won. As an example, if you have 10,000 Korean Won, you can convert that to USD by dividing 10,000 by 1000, which equals 10 USD. The same concept applies when converting larger numbers. To convert 45 billion KRW to USD, we must divide 45,000,000,000 by 1000, which equals 45,000,000 USD.

In conclusion, 45 billion Korean Won is equal to 45 million US Dollars.

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Answer:

b

Step-by-step explanation:

Answer

The length is 11.5.

Step-by-step explanation:

Knowing to find the volume, you must use w,h,l, we simply need to switch up the formula. the new formula is L= V over hw = 948.75 over 11 x 7.5 = 11.5

There will need to be at least 9 toenails on each roof beam in order to secure it. We will first calculate the total uplift force on each roof beam and then determine the number of toenails required to secure them in place.

Given parameters:

The lumber is DF-L.

Roof beams are connected to foundation top plates with 8d box toenails.

Roof beams are spaced 16 in O.C.

Wind pressure -40 psf; Wall height is 12ft.

First, let's calculate the total uplift force on each roof beam:

Wind uplift force = Wind pressure x Roof area

Roof area = (Length of roof/2) x (Distance between rafters)^2

Roof area = (12/2) x (16/12)^2

Roof area = 17.78 sq.ft.

Wind uplift force = -40 psf x 17.78 sq.ft.

Wind uplift force = -711.2 lb

We will now use the uplift force and the allowable load capacity of the toenails to calculate the required number of toenails per beam.

Allowable load capacity of 8d box toenails = 87 lb

Total uplift force on each roof beam = 711.2 lb

Number of toenails required per beam = Total uplift force/Allowable load capacity of toenails

Number of toenails required per beam = 711.2/87

Number of toenails required per beam = 8.17 ~ 9

To secure each roof beam, a minimum of 9 toenails will be required.

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That's all I got hope it helps

Step-by-step explanation:

2x+3>4x-8

or, 3+8>4x-2x

or, 11>2x

or, 11/2 > x

or, x < 11/2

Answer:

In 5 weeks, Ayana and Michelle have the same amount of money saved

(Namely $75)

Step-by-step explanation:

Ayana has $200 and spends $25 per week.

Michelle has $0 and saves $15 per week.

So, after one week,

Ayana has $200 - $25 = $175

Michelle has $0 + $ 15 = $15

After 2 weeks,

Ayana has $175 - $25 = $150

Michelle has $15 + $15 = $30

After 4 weeks,

Ayana has $150 - $50 = $100

Michelle has $30 + $30 = $60

After 5 weeks,

Ayana has $100 - $25 = $75

Michelle has $60 + $15 = $75

So, in 5 weeks, Ayana and Michelle have the same amount of money saved

Ayana and Michelle will have the same amount of money saved in 5 weeks.

To calculate the number of weeks Ayana and Michelle will take to have the same ammount of money, we have to make use of assumption. The reason for this is, as the number of weeks are yet to be found, so the value can only be found by substituting that particular entity into a variable.

Let's assume that number of weeks Ayana and Michelle will take to have the same ammount of money is "x".

So, Amount saved by Ayana after x weeks will be $200 - $25*x,

Amount saved by Michelle in x weeks will be $15 * x.

In the question, we have been told that Ayana and Michelle have the same amount of money saved, So we need to equate to above two equations to find the value of "x".

$200 - $25*x = $15 * x

$200 = $15 * x + $25*x

$200 = $40*x

$200 / $40 = x

x = 5

Therefore, Ayana and Michelle will take 5 weeks to have the same amound of money saved.

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Answer:

  2.76×10^-3 m/s²

Step-by-step explanation:

You want to know the acceleration of the moon toward the Earth, given its distance is 3.8×10^8 meters, Earth's mass is 5.98×10^24 kg, and the gravitational constant is 6.673×10^-11 N·m²/kg².

The acceleration of one body by another is ...

  a = GM/r²

where G is the gravitational constant, M is the body creating the gravitational field, and r is the distance between the masses.

  a = (6.673×10^-11)(5.98×10^24)/(3.8×10^8)² N/kg

  a = (6.673·5.98/3.8²)×10^(-11+24-16) m/s² ≈ 2.76×10^-3 m/s²

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See this attachment

The feature that will be the same as the original is:

The perimeter is the same.

The coordinate of C' is (3, 4).

The slope of A'C' is 1/4.

We have,

To rotate a point 180 degrees clockwise around another point, you can follow these steps:

- Calculate the displacement vector from the center of rotation to the point you want to rotate.

- Reverse the direction of the displacement vector.

- Apply the reversed displacement vector to the center of rotation.

- Let's apply these steps to each vertex of triangle ABC to find the coordinates of A', B', and C'.

So,

- Coordinate of A' (rotated point of A around (3, 4)):

Displacement vector: (A' - Center of rotation) = (A - Center of rotation) = (-5, 2) - (3, 4) = (-8, -2).

Reverse the direction of the displacement vector:

Reversed displacement vector: (-8, -2) * (-1) = (8, 2).

Apply the reversed displacement vector to the center of rotation:

Coordinate of A': (3, 4) + (8, 2) = (11, 6).

- Coordinate of B' (rotated point of B around (3, 4)):

Displacement vector: (B' - Center of rotation) = (B - Center of rotation) = (-2, 5) - (3, 4) = (-5, 1).

Reverse the direction of the displacement vector:

Reversed displacement vector: (-5, 1) * (-1) = (5, -1).

Apply the reversed displacement vector to the center of rotation:

Coordinate of B': (3, 4) + (5, -1) = (8, 3).

- Coordinate of C' (rotated point of C around (3, 4)):

Displacement vector: (C' - Center of rotation) = (C - Center of rotation) = (3, 4) - (3, 4) = (0, 0).

Reverse the direction of the displacement vector:

Reversed displacement vector: (0, 0) * (-1) = (0, 0).

Apply the reversed displacement vector to the center of rotation:

Coordinate of C': (3, 4) + (0, 0) = (3, 4).

So,

The coordinate of A' is (11, 6).

The coordinate of B' is (8, 3).

The coordinate of C' is (3, 4).

To find the perimeter and area of a triangle, we can use the coordinates of its vertices.

Let's start by finding the perimeter and area of triangle ABC.

Triangle ABC:

A = (-5, 2)

B = (-2, 5)

C = (3, 4)

The perimeter of triangle ABC:

The perimeter of a triangle is the sum of the lengths of its sides. We can use the distance formula to calculate the lengths of each side and then sum them up.

Length of side AB:

\(d_{AB} = \sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2)\)

= √((-2 - (-5))² + (5 - 2)²)

= √(3² + 3²)

= √(18)

= 3√2

Length of side BC:

\(d_{BC} = \sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2)\)

= √((3 - (-2))² + (4 - 5)²)

= √(5² + 1²)

= √(26)

Length of side CA:

\(d_{CA}= \sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2)\)

= √((-5 - 3)² + (2 - 4)²)

= √((-8)² + (-2)²)

= √(64 + 4)

= √(68)

= 2√17

The perimeter of triangle ABC:

\(P_{ABC} = d_{AB} + d_{BC} + d_{CA}\)

= 3√2 + √26 + 2√17

Area of triangle ABC:

The area of a triangle can be calculated using the coordinates of its vertices with the Shoelace formula.

Area of triangle ABC:

A_ABC = 1/2 x |(x1 x y2 + x2 x y3 + x3 x y1) - (y1 x x2 + y2 x x3 + y3 x x1)|

= 1/2 x |((-5 x 5) + (-2 x 4) + (3 x 2)) - ((2 x -2) + (5 x 3) + (4 x -5))|

= 1/2 x |(-25 - 8 + 6) - (-4 + 15 - 20)|

= 1/2 x |-27 - (-9)|

= 1/2 x |-27 + 9|

= 1/2 x |-18|

= 9

Now let's find the perimeter and area of triangle A'B'C', which is the rotated triangle of ABC.

Triangle A'B'C':

A' = (11, 6)

B' = (8, 3)

C' = (3, 4)

The perimeter of triangle A'B'C':

Using the same approach as before, we calculate the lengths of the sides:

Length of side A'B':

d_A'B' = √((x2 - x1)^2 + (y2 - y1)^2)

= √((8 - 11)^2 + (3 - 6)^2)

= √((-3)^2 + (-3)^2)

= √(18)

= 3√2

Length of side B'C':

d_B'C' = √((x2 - x1)^2 + (y2 - y1)^2)

= √((3 - 8)^2 + (4 - 3)^2)

= √((-5)^2 + 1^2)

= √(26)

Length of side C'A':

d_C'A' = √((x2 - x1)^2 + (y2 - y1)^2)

= √((3 - 11)^2 + (4 - 6)^2)

= √((-8)^2 + (-2)^2)

= √(68)

= 2√17

The perimeter of triangle A'B'C':

P_A'B'C' = d_A'B' + d_B'C' + d_C'A'

= 3√2 + √26 + 2√17

Area of triangle A'B'C':

Using the same Shoelace formula as before:

Area of triangle A'B'C':

A_A'B'C' = 1/2 x |(x1 x y2 + x2 x y3 + x3 x y1) - (y1 x x2 + y2 x x3 + y3 x x1)|

= 1/2 x |((11 x 3) + (8 x 4) + (3 x 6)) - ((6 x 8) + (3 x 3) + (4 x 11))|

= 1/2 x |(33 + 32 + 18) - (48 + 9 + 44)|

= 1/2 x |(83) - (101)|

= 1/2 x |-18|

= 9

Now,

The perimeter of triangle ABC is 3√2 + √26 + 2√17, and the area of triangle ABC is 9.

The perimeter of triangle A'B'C' is 3√2 + √26 + 2√17, and the area of triangle A'B'C' is 9.

The slope of A'C' can be calculated using the coordinates of A' and C'.

The slope of a line can be calculated using the formula:

slope = (y2 - y1) / (x2 - x1)

For A'(11, 6) and C'(3, 4), the slope of A'C' is:

slope = (4 - 6) / (3 - 11)

= -2 / -8

= 1/4

Thus,

The feature that will be the same as the original is:

The perimeter is the same.

The coordinate of C' is (3, 4).

The slope of A'C' is 1/4.

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Answer:

13 tables

Np btw

The expected value of the absolute value of the difference of two distinct integers chosen at random from the first six positive integers is 35/12.

To find the expected value, we need to consider all possible pairs of distinct integers and their corresponding absolute differences. There are a total of 15 pairs, and we can list them as (1,2), (1,3), (1,4), (1,5), (1,6), (2,3), (2,4), (2,5), (2,6), (3,4), (3,5), (3,6), (4,5), (4,6), and (5,6).

The absolute differences of these pairs are 1, 2, 3, 4, 5, 1, 2, 3, 4, 1, 2, 3, 1, 2, and 1, respectively. The expected value is the sum of the products of each absolute difference and its corresponding probability, which is 1/15 for each pair, giving us:

(1/15) × (1+2+3+4+5+1+2+3+4+1+2+3+1+2+1) = 35/12.

Therefore, the expected value of the absolute value of the difference of these two numbers is 35/12.

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To evaluate \(8^{\frac{2}{3} }\) first find the square of 8 and then take the cube root.

The way of representing huge numbers in terms of powers is known as an exponent. Exponent, then, is the number of times a number has been multiplied by itself.

Depending on the powers they possess, many rules of exponents are given.

Law of Multiplication: Exponents should be added while keeping the base constant when multiplying like bases.

Exponents should be multiplied while bases are kept constant when bases are raised by a power of two or more.

Division Rule: When dividing like bases, maintain the base constant and deduct the exponent of the denominator from the exponent of the numerator.

The given value can be written as:

\(8^{\frac{2}{3} } = \sqrt[3]{8^{2} }\)

Hence, to evaluate \(8^{\frac{2}{3} }\) first find the square of 8 and then take the cube root.

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Answer:

11/4 or 2.75

Step-by-step explanation:

Slope = (y1-y2)/(x1-x2)

Therefore:

(y1-y2)/(x1-x2)

(-21-23)/(7-23)

-44/-16

11/4

2.75

Please mark as brainliest.....Thanks!

your equation will be:

y+21=2.75(x-7)

Answer:

$12,960.00

Step-by-step explanation:

Use the formula A = P (1+rt)

A = (12000)(1+(0.04x2))

A = $12,960.00

Answer:

if the initial amount is 1200 then the answer is 1296

if the initial amount is 12000 then the answer is 12960

the initial number was unclear with the placement of the comma

Step-by-step explanation:

The graph of the first linear equation:

y = x + 3

Can be seen in the image at the end.

Let's graph the first line, which is:

y = x + 3.

To graph it, we need to find two points on the line, to find these, we can evaluate the linear equation in two values of x.

Using x = 0 we get:

y = 0 + 3

y = 3

So we have the point (0, 3).

Using x = 1, we get:

y = 1 + 3

y = 4

So we have the point (1, 4)

Now we can graph these two points on the same coordinate axis and connect them with a line. Like in the example below.

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The sum of the first ten prime numbers is 129.

The prime numbers are those numbers that have only one factor namely 1 and the number itself.

The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.

Their sum is

2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29

= 129

Hence, the sum of the first ten prime numbers is 129.

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Step-by-step explanation:

\( \sqrt{(x + 6) ^{2} } = \sqrt{18} \\ x + 6 = + - \sqrt{18} \\ x + 6 = + - \sqrt[3]{2} \)

Answer:

I forgot what complementary means but it's either 3 or 5, probably 3

Step-by-step explanation:

Appropriate hypotheses for performing a significance test: Null hypothesis: The mean weight of loaves of bread produced at the bakery is equal to 1 pound. Alternative hypothesis: The mean weight of loaves of bread produced at the bakery is less than 1 pound.

Parameter of interest: The mean weight of loaves of bread produced at the bakery.b. There is some evidence for the alternative hypothesis since the p-value is 0.00806, which is less than the level of significance of 0.01. This means that the results are statistically significant, and it is unlikely to get this result due to chance alone.c. At the α level of 0.01, the conclusion would be to reject the null hypothesis since the p-value is less than the level of significance.

This means that there is sufficient evidence to support the alternative hypothesis, which is that the mean weight of loaves of bread produced at the bakery is less than 1 pound. In summary, data markers are used in charts to represent individual data points. They are often used in combination with other chart elements, such as axes, gridlines, and legends, to help viewers understand the data being presented. The column, bar, area, dot, pie slice, or other symbol in a chart that represents a single data point is a data marker. Data markers provide you with a visual representation of the data in a chart. For example, in a column chart, each column represents a single data point.

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Based on the vertical line test, y is not a function of x in the given graph because the line drawn intercepts the graph at two points.

The vertical line test is used to test whether a relation that is graphed is a function or not.

To conduct the vertical line test, a vertical line is drawn to cut through the graph that represents a relation. If the line intersects the graph at exactly one point, then it is a function. If the line intersects the graph at more than one point, then the graph does not represent a function.

The image attached below shows the vertical line test. The line intercepts the graph at two points, therefore, the relation that is represented by the graph is not a function.

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