Five people will equally share two pizzas. How much pizza will each person recieve.

Answer:

                     .                           .                                       .

_________-16____-14____-12____-10____-8____-6____-4____-2____0

There are 7 degrees of freedom.

In performing the pooled-variance t test, the degrees of freedom can be calculated using the formula:
df = (n1 - 1) + (n2 - 1)

Substituting the given values:
df = (4 - 1) + (5 - 1)
df = 3 + 4
df = 7

Therefore, there are 7 degrees of  freedom.

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There are 7 degrees of freedom for the pooled-variance t-test.

To perform a pooled-variance t-test, we need to calculate the degrees of freedom. The formula for degrees of freedom in a pooled-variance t-test is:

\(\[\text{{df}} = n_1 + n_2 - 2\]\)

where \(\(n_1\)\) and \(\(n_2\)\) are the sample sizes of the two independent samples.

In this case, \(\(n_1 = 4\)\) and \(\(n_2 = 5\)\). Substituting these values into the formula, we get:

\(\[\text{{df}} = 4 + 5 - 2 = 7\]\)

In a pooled-variance t-test, we combine the sample variances from two independent samples to estimate the population variance. The degrees of freedom for this test are calculated using the formula \(df = n1 + n2 - 2\), where \(n_1\)and \(n_2\) are the sample sizes of the two independent samples.

To understand why the formula is \(df = n1 + n2 - 2\), we need to consider the concept of degrees of freedom. Degrees of freedom represent the number of independent pieces of information available to estimate a parameter. In the case of a pooled-variance t-test, we subtract 2 from the total sample sizes because we use two sample means to estimate the population means, thereby reducing the degrees of freedom by 2.

In this specific case, the sample sizes are \(n1 = 4\) and \(n2 = 5\). Plugging these values into the formula gives us \(df = 4 + 5 - 2 = 7\). Hence, there are 7 degrees of freedom for the pooled-variance t-test.

Therefore, there are 7 degrees of freedom for the pooled-variance t-test.

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Answer:25/121

Step-by-step explanation:

Answer:

The numbers are 36 and 68.

Step-by-step explanation:

Let the smaller number be x.

"The larger number is four less than two times the smaller

number."

The larger number is

2x - 4

The sum of the numbers is x + 2x - 4, or 3x - 4.

"The sum of the numbers is 104."

3x - 4 = 104

3x = 108

x = 36

The smaller number is 36.

The larger number is 2x - 4, or

2x - 4 = 2(36) - 4 = 72 - 4 = 68

The larger number is 68.

Answer: The numbers are 36 and 68.

The alternative hypothesis in this case would be that at least one of the four treatments has a different effect on the mean time kept awake compared to the others.

If the one-way ANOVA test rejects the null hypothesis, it means that there is a significant difference in the mean time kept awake among the four treatments. This means that at least one of the treatments is more effective in keeping you awake than the others. It is important to note that the alternative hypothesis does not specify which of the treatments is more effective, only that at least one is different from the others. To determine which treatment is more effective, you would need to conduct additional tests, such as post-hoc tests.

The alternative hypothesis in this case would be that at least one of the four treatments has a different effect on the mean time kept awake compared to the others.

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a)The sample sizes are n1 = 379 and n2 = 573. The Z-score for a 90% confidence level is approximately 1.645.
b)The confidence interval contains both positive and negative numbers, it means that the true difference between the population proportions can be either positive or negative.

(a) To find the 90% confidence interval for pi - p2, we can use the formula:

CI = (p1 - p2) ± Z * sqrt((p1 * (1 - p1) / n1) + (p2 * (1 - p2) / n2))

where p1 is the proportion of couples with three preferences in common, p2 is the proportion of couples with two preferences in common, n1 is the sample size for couples with three preferences in common, n2 is the sample size for couples with two preferences in common, and Z is the Z-score corresponding to a 90% confidence level.

From the information provided, p1 = 134/379 = 0.353 and p2 = 215/573 = 0.375. The sample sizes are n1 = 379 and n2 = 573. The Z-score for a 90% confidence level is approximately 1.645.

Plugging these values into the formula, we get:

CI = (0.353 - 0.375) ± 1.645 * sqrt((0.353 * (1 - 0.353) / 379) + (0.375 * (1 - 0.375) / 573))

Calculating this expression, we find that the lower limit of the confidence interval is -0.047 and the upper limit is 0.029.

Therefore, the 90% confidence interval for pi - p2 is approximately -0.047 to 0.029.

(b) In the context of this problem, the confidence interval in part (a) means that we are 90% confident that the true difference between the population proportions of couples with three preferences in common and couples with two preferences in common falls between -0.047 and 0.029.

Since the confidence interval contains both positive and negative numbers, it means that the true difference between the population proportions can be either positive or negative.

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A loaf of bread costs (1/8)R^(64), and a bottle of milk costs twice as much, or (1/4)R^(64).

Let the cost of a loaf of bread be x, and the cost of a bottle of milk be y.

From the problem, we know that:

2 loaves of bread cost 2x

3 bottles of milk cost 3y

The total cost of the 2 loaves of bread and 3 bottles of milk is R^(64)

We also know that a bottle of milk costs twice as much as a loaf of bread, so we can write:

y = 2x

Now we can use these equations to solve for x and y:

2x + 3y = R^(64)

y = 2x

Substituting the second equation into the first, we get:

2x + 3(2x) = R^(64)

8x = R^(64)

x = (1/8)R^(64)

So a loaf of bread costs (1/8)R^(64), and a bottle of milk costs twice as much, or (1/4)R^(64).

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This dynamic programming algorithm will help you find the optimal solution for the coin-changing problem using the fewest number of coins.

To optimally solve the coin-changing problem for an arbitrary denomination set {d1, d2, ..., dk} and make up a value 'v' using the fewest number of coins, you can use a dynamic programming algorithm. Here's the step-by-step explanation:

1. Create an array 'dp' of length 'v+1' and initialize all elements with infinity (except dp[0], which should be 0, as you need 0 coins to make up a value of 0).
2. Sort the denomination set in ascending order.
3. Iterate through the denomination set using a variable 'coin' from d1 to dk.
4. For each 'coin', iterate through the 'dp' array starting from the index 'coin' up to 'v' using a variable 'i'.
5. In the inner loop, for each 'i', update the value of dp[i] with the minimum between dp[i] and 1 + dp[i-coin].
6. After the loops, the value of dp[v] will be the minimum number of coins needed to make up the value 'v'. If dp[v] is still infinity, then it's not possible to make up the value 'v' using the given denomination set.

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Answer:

the value of theta i 45°

Answer:

6.25 hours

Step-by-step explanation:

4 sheep/30 minutes

50 sheep/? minutes

50/4= 12.5

12.5 x 30 min = 375 min

375 min x \(\frac{1hr}{60 min}\) = 6.25 hrs

Equivalent ways for chi-square statistic: statistically significant relationship between the variables, reject null hypothesis, suggesting that the relationship in the population is not due to chance, The probability of observing the data by chance is 5% or less, supporting the presence of a relationship in the population.

If the p-value is 0.05 or less and the chi-square statistic is at least 3.84, it can be concluded that there is a significant relationship in the population. Another way to state this result is that the null hypothesis (that there is no relationship) can be rejected at a significance level of 0.05.

Based on your question, you would like to know equivalent ways to state the result when the chi-square statistic is at least 3.84 and the p-value is 0.05 or less. Here's my answer:

When the chi-square statistic is at least 3.84 and the p-value is 0.05 or less, we can conclude that the relationship in the population is real. Equivalent ways to state this result are:

1. There is a statistically significant relationship between the variables in the population.
2. We reject the null hypothesis, suggesting that the relationship in the population is not due to chance.
3. The probability of observing the data by chance is 5% or less, supporting the presence of a relationship in the population.

I hope this helps! Let me know if you need any further clarification.

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Answer:

33361

Step-by-step explanation:

The equation appears to be
75 ( 1 + 0.84 )^x

Since it increases by 84% every 2 days, you'd devide 20 by 2, making 10

So to do the equation you'd shove that into a calculator since no one wants to hand do that sort of equation.

75 ( 1 + 0.84 )^10 = 33361.0332844 = 33361

The correct answer is option (a) n < 27. By dividing both sides of the inequality by -3, we get n > -27.

To solve the inequality -3n < 81, we divide both sides by -3. Remember that when dividing by a negative number, the direction of the inequality sign changes. Dividing both sides by -3 gives us n > -27. So, the correct answer is option (d) n > -27.

The reasoning behind this is that dividing by -3 reverses the inequality sign, which means that the less than ("<") sign becomes a greater than (">") sign.

Option (a) n < 27 is incorrect because dividing by -3 changes the direction of the inequality. Option (b) is stated to be wrong. Option (c) n = 27 is incorrect because the original inequality is strict ("<") and not an equality ("=").

Therefore, By dividing both sides of -3n < 81 by -3, we get n > -27. Therefore, the correct answer is option (a) n < 27.

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Complementary angles has sum of \(90^{o}\) and supplementary angles have sum of \(180^{o}\) , The answer is \(62^{o}\) and \(48^{o}\) .

When two straight lines or rays intersect at a single endpoint, an angle is created. The vertex of an angle is the location where two points come together.

When two angles' measurements add up to 90 degrees, they are said to be complementary. When two angles' measures sum up to 180 degrees, they are said to be supplementary. Keeping in mind that the letter s follows the letter c in the alphabet and that 180 is greater than 90 can help you avoid conflating these definitions.

\(28^{o}\)

complement = \(90^{o}-28^{o}\) = \(62^{o}\)

\(132^{o}\)

supplement= \(180^{o}-132^{o}\) = \(48^{o}\)

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Optically active compounds can rotate plane-polarized light in

A - Clockwise rotation

B - Counterclockwise rotation

C - Dextrorotatory

D - Levorotatory

Optically active compounds can rotate the plane of polarization of light, which can be either clockwise or counterclockwise. The direction of rotation is usually expressed as either dextrorotatory (abbreviated as +) or levorotatory (abbreviated as -), depending on whether the compound rotates the plane of polarization to the right or left, respectively.

For example, a compound that rotates the plane of polarization to the right (clockwise) is said to be dextrorotatory (+), while a compound that rotates the plane of polarization to the left (counterclockwise) is said to be levorotatory (-).

Therefore, A corresponds to clockwise rotation, B corresponds to counterclockwise rotation, C corresponds to dextrorotatory, and D corresponds to levorotatory.

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a. The number of bricks required for the top step is 795.

b. The total number of bricks required for all the steps is 2250.

(a) To find the number of bricks required for the top step, we need to use the information that each successive step requires two less bricks than the prior step.

So, we can start by finding the total number of bricks required for all the steps and then subtracting the number of bricks required for the bottom 29 steps.

The total number of bricks required for all the steps can be found using the formula for the sum of an arithmetic sequence:

S = n/2 * (a1 + an)

where S is the sum, n is the number of terms, a1 is the first term, and an is the nth term.

In this case, we have:

n = 30 (since there are 30 steps)

a1 = 100 (since the bottom step requires 100 bricks)

d = -2 (since each successive step requires 2 less bricks than the prior step)

an = a1 + (n-1)d = 100 + (30-1)(-2) = 40.

Plugging these values into the formula, we get:

S = 30/2 * (100 + 40) = 2250

So, the total number of bricks required for all the steps is 2250.

To find the number of bricks required for the top step, we subtract the number of bricks required for the bottom 29 steps from the total number of bricks required for all the steps:

number of bricks required for top step = total number of bricks - number of bricks for bottom 29 steps

= 2250 - [100 + 98 + 96 + ... + 6 + 4 + 2]

= 2250 - 1455

= 795

Therefore, the number of bricks required for the top step is 795.

(b) To find the total number of bricks required to build the staircase, we simply add up the number of bricks required for each step. We can use the formula for the sum of an arithmetic series again to simplify the calculation:

S = n/2 * (a1 + an)

where S is the sum, n is the number of terms, a1 is the first term, and an is the nth term.

In this case, we have:

n = 30 (since there are 30 steps)

a1 = 100 (since the bottom step requires 100 bricks)

d = -2 (since each successive step requires 2 less bricks than the prior step)

an = a1 + (n-1)d = 100 + (30-1)(-2) = 40

Plugging these values into the formula, we get:

S = 30/2 * (100 + 40) = 2250

Therefore, the total number of bricks required to build the staircase is 2250.

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Answer:

Given,

side=4√5 millimetres

=4×4√5

=16√5

Perimeter= 16√5 milimetre

Area= side× side

=4√5 × 4√5

=80

Area= 80 square milimeters

------------------------------

hope it helps...

have a great day!

Answer:

Given,

side=4√5 mm

=4×4√5

=16√5

Perimeter= 16√5 mm

Area= side× side

=4√5 × 4√5

=80

Area= 80 square milimeters

------------------------------

hope it is helpful to you

stay safe healthy and happy

Answer:i will help! what do you ned help with?

Step-by-step explanation:

The perimeter of one face of the cube is given by the option (A) a/4.


The surface area of a cube is given by the formula 6a^2, where a is the length of one side of the cube. In the given expression 6(a/4)^2, we can simplify it as follows:
6(a/4)^2 = 6(a^2/16) = (6/16) * a^2 = 3/8 * a^2

We know that the perimeter of a square is equal to 4 times the length of one side. In this case, we have a cube, and each face of the cube is a square. Therefore, the perimeter of one face of the cube is 4 times the length of one side.

Hence, the correct option is (A) a/4, as it represents the perimeter of one face of the cube.

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Answer:

57 liters

Step-by-step explanation:

Answer

1.0/5

0

MrRoyal

Ace

9K answers

23.3M people helped

MISSING DETAILS

Yoko's fish tank has 17 liters of water in it. She plans to add 5 liters per minute until the tank has at least 57 liters. What are the possible numbers of minutes Yoko could add water?

Answer:

Minutes = 8 minutes

Step-by-step explanation:

Topic: Inequality

Given:

Available Size of water = 17 liters

Increment = 5 liters/minute

Size of water needed = At least 57 liters

Putting the above together, as have

17 + 5m > 57

where m represents total minutes and > represent at least

Solving the Inequality

5m > 57 - 17

5m > 40 ------ Divide through by 5

5m/5 > 40/5

m > 8

So, Yoko will need to add water for at least 8 minutes before she fills her tank to 57 liters.

Answer:

5(3-9) = y    

15 - 45 = y  

y = -30        

14 = 5k - 31

-5k = -31 - 14

-5k = -45

k = 9

t = -5(9 - 7)

t = -45 + 35

t = -10

v = 13(8-9)

v = 104 - 117

v = -13

13f = 53

f = 4

Answer:

\(\huge{\boxed{\text{ See ~ attached ~ picture.}}}\)

Step-by-step explanation:

Rules for solving an equation :

Hope I helped!

Best regards!

~\(\text{ TheAnimeGirl}\)

Answer:

No

Step-by-step explanation:

Hope this helps :)

Answer:

$47

Step-by-step explanation:

Making a deposit is adding money to your bank account, so you added a total of 8+12+5=$25 to your account.

Withdrawals are when you take money out of your account, so you took a total of 6+20+4=$30 from your account.

This means that you now have 52+25-30=$47.

=========================================================

Explanation:

A = total deposits = 8+12+5 = 20+5 = 25 dollars

B = total withdrawals = 6+20+4 = 26+4 = 30 dollars

C = net change = A - B = 25 - 30 = -5

The negative net change means that you took more money out than you deposited. Therefore, your account balance goes down by that amount mentioned in variable C.

You started with $52, so your balance drops to 52-5 = 47 dollars

Here is another way to calculate the answer:

52+8+12+5-6-20-4 = 47

The value of the given expression [\(87^3+ 13^3/87^2 -87 * 13 + 13^2\)] by simplifying the numerator and denominator using suitable identities is 100.

We will first calculate the numerator:

As  (\(a^3\) + \(b^3\)) = (a + b)(\(a^2\) - ab + \(b^2\)) :

\(87^3\) + \(13^3\) = (87 + 13)(\(87^2\) - \(87 * 13\) + \(13^2\))

= 100(\(87^2\) - 87 * 13 + \(13^2\))

Now, calculate the denominator:

\(87^2 - 87 * 13 + 13^2\)

As,(\(a^2 -2ab +b^2\)) =\((a - b)^2\):

\(87^2 - 87 * 13 + 13^2 = (87 - 13)^2\)

\(= 74^2\)

So by solving the equation further:

\((87^3+13^3) / (87^2- 87 * 13+13^2) = 100*(87^2- 87 *13 + 13^2)/(87^2 - 87 * 13 + 13^2)\)

As we can see the numerator and denominator are the same expressions (\(87^2 - 87 * 13 + 13^2\)). so, they cancel each other:

\((87^3 + 13^3) / (87^2 - 87 * 13 + 13^2) = 100\)

So, the value of the given expression is 100.

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Answer:

324 miles

Step-by-step explanation:

Set up a proportion

243

12

=

x

16

Cross multiply

12

x

=

3888

x=324 miles

Therefore, the nerf reaches its maximum height at 1.75 seconds after it is launched.

In mathematics, a function is a rule that assigns to each element in a set (called the domain) exactly one element in another set (called the range). The domain and range can be any set, including numbers, and the function itself can be a formula, a graph, or described in words. Functions are widely used in various fields of mathematics, science, and engineering to describe relationships between variables and analyze data.

Here,

It looks like there is a mistake in the function definition provided, as it is missing an independent variable. Assuming the correct function is:

h(t) = -16t² + 56t + 142

To find the time at which the nerf reaches its maximum height, we need to find the vertex of the parabolic function defined by h(t). The x-coordinate of the vertex gives us the time at which the maximum height is reached.

The x-coordinate of the vertex is given by:

t = -b/2a

where a = -16 and b = 56. Substituting these values, we get:

t = -56 / 2(-16) = 1.75

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Answer:

4x+90°=110°[ vertically opposite angle]

4x=110°-90°

4x=20

X=20÷4

X=5

Answer/Step-by-step explanation:

Given:

m<12 = 121°

m<6 = 75°

a. m<1 = m<6 (vertical angles)

m<1 = 75° (substitution)

b. m<12 = m<1 + m2 (alternate exterior angles)

121° = 75° + m<2 (substitution)

121° - 75° = m<2 (subtraction property of equality)

46° = m<2

m<2 = 46°

c. m<1 + m<2 + m<3 = 180° (angles on a straight line)

75° + 46° + m<3 = 180° (substitution)

121° + m<3 = 180°

m<3 = 180° - 121° (subtraction property of equality)

m<3 = 59°

d. m<4 = m<3 (vertical angles)

m<4 = 59° (substitution)

e. m<5 + m<4 + m<6 = 180° (angles on a straight line)

m<5 + 59° + 75° = 180° (substitution)

m<5 + 134° = 180°

m<5 = 180° - 134° (Subtraction property of equality)

m<5 = 46°

f. m<7 = m<12 (vertical angles)

m<7 = 121° (substitution)

g. m<8 = m<4 (vertical angles)

m<8 = 59° (substitution)

h. m<9 = m<6 (Alternate Interior Angles)

m<9 = 75° (substitution)

i. m<10 + m<9 = 180° (Linear Pair)

m<10 + 75° = 180° (substitution)

m<10 = 180° - 75° (Subtraction property of equality)

m<10 = 105°

j. m<11 = m<8 (vertical angles)

m<11 = 59° (substitution)

k. m<13 = m<10 (vertical angles)

m<13 = 105° (substitution)

l. m<14 = m<9 (vertical angles)

m<14 = 75° (substitution)

Answer:

a. 65

b. D

Step-by-step explanation:

The question asks for an expression that solves for the profit that the company will make from each phone. The expression would be 65x, where 65 represents $65 profit from each phone, since $50 is spent and $115 is made, 115-50 gives you the profit, $65

D is the answer because the question asks for the expression that shows the earnings, or how much is made from each phone

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

To solve the quadratic equation 3x^2 - 9x - 12 = 0, we can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a),

where a, b, and c are the coefficients of the quadratic equation.

In this case, a = 3, b = -9, and c = -12. Substituting these values into the quadratic formula, we have:

x = (-(-9) ± √((-9)^2 - 4 * 3 * (-12))) / (2 * 3)

= (9 ± √(81 + 144)) / 6

= (9 ± √(225)) / 6

= (9 ± 15) / 6.

We have two possible solutions:

For the positive root:

x = (9 + 15) / 6

= 24 / 6

= 4.

For the negative root:

x = (9 - 15) / 6

= -6 / 6

= -1.

The solutions to the equation 3x^2 - 9x - 12 = 0 are x = 4 and x = -1.

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