find the number degree of freedom, Critical value X², X² Given 95% confidence; n = 25, s = 0.24 Degree of freedom, df = 24 Critical value: X= [Select] X²= [Select] [Select] 39.364 32.852 12.401

Answer:60x+28

Step-by-step explanation:

Answer: False

Step-by-step explanation:

The question asks for 3*1/3.

In this case, this can be translated as 3/3.

3 divided by 3 equals 1, not 9.

So the answer is False.

Answer:

x=2

Step-by-step explanation:

4x+6=2x + 10 | -6

2x = 4 | /2

x=2

The horizontal distance from the end of the diving board, x is 1/2 meter and the height of the diver f(x) is 17/4 meters above the water when the path of a diver is modeled by the function f(x)=-9x^(2)+9x+1.

Given:

function f(x) = -9x² + 9x + 1. It represents the path of a diver.

where f(x) is the height of the diver above water, and

x is the horizontal distance from the end of the diving board

The function is in the form of a quadratic equation, which is a special case of polynomial function. Polynomial functions are continuous and smooth in nature. Hence, we can differentiate the function f(x) to obtain the velocity of the diver.

Differentiating with respect to x, we get

df/dx = -18x + 9.

This is the velocity function of the diver. Let v be the velocity of the diver at any point on the path. If the diver hits the water surface, then its velocity is zero.

Therefore, -18x + 9 = 0 => x = 1/2.

This is the horizontal distance of the diver from the end of the diving board when it hits the water surface.

To find the height of the diver at this point, we substitute x = 1/2 in the function f(x).

Hence, f(1/2) = -9(1/2)² + 9(1/2) + 1 = -9/4 + 9/2 + 1 = 17/4.

Therefore, the height of the diver at the point where it hits the water surface is 17/4 meters above the water.

Hence, the horizontal distance from the end of the diving board is 1/2 meter and the height of the diver is 17/4 meters above the water at that point.

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Answer:

5/8

Step-by-step explanation:

I believe the last number is 187.5 not 1875. The answer is 5/8

The approximate probability of exactly two people in a group of seven having a birthday on April 15 is (C) \(7.4 x 10^-^6\)

To calculate the probability of exactly two people in a group of seven having a birthday on April 15, we can use the binomial distribution formula:

\(P(X = k) = C(n, k) * p^k * (1 - p)^(^n^-^k^)\)

Where:

So, plugging in the values, we get:

\(P(X = 2) = C(7, 2) * (1/365)^2 * (1 - 1/365)^(7 - 2)\)

\(= 21 * (1/365)^2 * (364/365)^5\)

\(= 2.38 x 10^-5\)

The probability of exactly two people in a group of seven having a birthday on April 15 can be calculated using the binomial distribution formula.

The formula takes into account the number of trials, the probability of success in a single trial, and the number of successes desired.

In this case, we want to find the probability that exactly two people in a group of seven have a birthday on April 15, assuming that all days of the year are equally likely for a birthday.

Plugging in the values into the formula gives us an approximate probability of \(7.4 x 10^-^6\), which is the answer (C).

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Using the triangle inequality theorem the range of measures of the third side is 5 < x < 41

The triangle inequality theorem states that any side of a triangle must be shorter than the other two sides added together.

In other words, the triangle inequality theorem describes the relationship between the three sides of a triangle. According to this theorem, for any triangle, the sum of lengths of two sides is always greater than the third side.

Therefore, for a triangle that has the sides a, b and c will follow the principle below:

c < a + b

b < a + c

a < b + c

Therefore, the triangle has two sides as 18 ft and 23 ft. The range of the third side is as follows:

x < 23 + 18; x < 41

18 < 23 + x

23 < x + 18

Therefore, base on the first and third inequality.

x < 41

x > 5

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Answer:A

Step-by-step explanation:

The row of peas and the row of lettuce together are 90 inches long.

The length of the row of peas is \(1\ \frac{1}{6}\ \text{yards}\) which can be converted to inches by multiplying it with 36 (1 yard = 36 inches).

So, the length of the row of peas is:

\($\begin{equation*}1\frac{6}{1} \text{ yards} = \left(1+\frac{1}{6}\right) \text{ yards} = \frac{7}{6} \text{ yards} = \frac{7}{6} \times 36 \text{ inches} = 42 \text{ inches}\end{equation*}\)

The length of the row of lettuce is 4 feet which can be converted to inches by multiplying it with 12 (1 foot = 12 inches).

So, the length of the row of lettuce is:

4 feet = 4 × 12 inches = 48 inches

Therefore, the total length of the row of peas and lettuce together is:

42 inches+48 inches=90 inches

Hence, the row of peas and the row of lettuce together are 90 inches long.

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A matrix is the sum of two non-singular matrices is not generally true.

I'm sorry, but I'm unable to prove that a matrix is the sum of two non-singular matrices. The statement itself is not true.

A non-singular matrix, also known as an invertible matrix or non-singular square matrix, is a matrix that has an inverse. In other words, a non-singular matrix is one that can be multiplied by another matrix to give the identity matrix.

If we consider the sum of two non-singular matrices, it does not necessarily result in a non-singular matrix. The sum of two non-singular matrices can be a non-invertible matrix or a singular matrix.

For example, let's consider two non-singular matrices:

A = [1 0] B = [0 1]

[0 1] [1 0]

The sum of A and B would be:

A + B = [1+0 0+1] = [1 1]

[0+1 1+0] [1 1]

The resulting matrix A + B is a singular matrix since its determinant is 0. Therefore, it is not the sum of two non-singular matrices.

Hence, the claim that a matrix is the sum of two non-singular matrices is not generally true.

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Answer: 49.5

Step-by-step explanation:

All triangles equal 180 degrees

We know two of these degrees

73+57.5=130.5

180-130.5=49.5 degrees

The correct inequality that can be used to determine g, the maximum number of gigabytes Rahul can use while staying within his budget is:

95 > 4g + 36

What is an inequality?

Rahul pays a flat cost of $36 per month and $4 per gigabyte. So, his monthly bill can be expressed as:

Bill = 4g + 36

where g is the number of gigabytes used in the month.

We want to find the maximum number of gigabytes Rahul can use while staying within his budget of $95 per month. This means we need to find the value of g that satisfies the inequality:

Bill ≤ 95

Substituting the expression for Bill, we get:

4g + 36 ≤ 95

Subtracting 36 from both sides, we get:

4g ≤ 59

Dividing both sides by 4, we get:

g ≤ 14.75

Since the number of gigabytes used cannot be a fraction, we can conclude that the maximum number of gigabytes Rahul can use while staying within his budget is 14. Therefore, the correct inequality is:

95 > 4g + 36

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Answer:

The formula for the area of a circle is:

A = πr^2

where A is the area and r is the radius.

In this case, we are given that the area is 4π cm². Solving for the radius, we get:

4π = πr^2

r^2 = 4

r = 2

So the radius of the circle is 2 cm.

The formula for the circumference of a circle is:

C = 2πr

Plugging in the value for the radius, we get:

C = 2π(2) = 4π

Therefore, the circumference of the circle is 4π cm.

The trigonometric relations from the triangles are

a) tan A = 5/12

b) sin C = 3/5

c) cos X = 3/5

d) sin Z = 4/5

e) tan Z = 4/3

f) tan X = 12/5

What are trigonometric relations?

Trigonometry is the study of the relationships between the angles and the lengths of the sides of triangles

The six trigonometric functions are sin , cos , tan , cosec , sec and cot

Let the angle be θ , such that

sin θ = opposite / hypotenuse

cos θ = adjacent / hypotenuse

tan θ = opposite / adjacent

tan θ = sin θ / cos θ

cosec θ = 1/sin θ

sec θ = 1/cos θ

cot θ = 1/tan θ

Given data ,

a)

The triangle is ΔABC

tan A = opposite side / adjacent side

Substituting the values in the equation , we get

tan A = 10/24

tan A = 5/12

b)

The triangle is ΔABC

sin C = opposite side / hypotenuse

Substituting the values in the equation , we get

sin C = 24/40

sin C = 3/5

c)

The triangle is ΔXYZ

cos X = adjacent side / hypotenuse

Substituting the values in the equation , we get

cos X =21/35

cos X = 3/5

d)

The triangle is ΔXYZ

sin Z = opposite side / hypotenuse

Substituting the values in the equation , we get

sin Z = 32/40

sin Z = 4/5

e)

The triangle is ΔXYZ

tan Z = opposite side / adjacent side

Substituting the values in the equation , we get

tan Z = 28/21

tan Z = 4/3

f)

The triangle is ΔXYZ

tan X = opposite side / adjacent side

Substituting the values in the equation , we get

tan X = 12/5

Hence , the trigonometric relations are solved from the triangles

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The following are the zeros for the function h (x) = x2 + 3x - 8: - x= -4 and x=2.

Given a collection of inputs X (domain) and a set of potential outputs Y (codomain), a function is more technically defined as a set of ordered pairings (x,y) where xX and yY with the caveat that there can only be one ordered pair with the same value of x. The function notation f:XY can be used to express that f is a function from X to Y.

The function's zero is a value of x that makes it equal to zero. In other words, the equation f(x) = 0 leads to a zero.

By putting h(x) equal to zero and figuring out x, we may determine the zeroes for the function h(x) = x2 + 3x - 8.

h(x) = x² + 3x - 8 = 0

We may factor the left side of the equation to find x:

x² + 3x - 8 = (x-2)(x+4) = 0

We set each factor to zero and solve for x to discover the zeroes:

x-2 = 0 or x+4 = 0

x = 2 or x = -4

Consequently, the function's zeros are x = 2 and x = -4.

So, A is the right response. x = -4 and x = 2

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The complete question is

What are the zeros of the function h (x) = x² + 3x - 8?

A. x = -4 and x = -2

B. x= -8 and x = 2

C. x = -2 and x = 8

D. x = 2 and x = 8

Answer:

(0,-6), (-2,0)

Step-by-step explanation:

-3x-y=6

-y=6+3x

y=-3x-6

when x=0, y=-6

when y=0 x=-2

Answer:

a = -3

Step-by-step explanation:

Step 1:  Since we're told that 5 to the power of a = 1/125, we can use the following equation to solve for a:

5^a = 1/125

Step 2:  Take the log of both sides

log(5^a) = log(1/125)

Step 3:  According to the power rule of logs, we can bring a down and multiply it by log(5):

a * log(5) = log (1/125)

Step 4:  Divide both sides by log(5) to solve for a:

(a * log(5) = log(1/125)) / log(5)

a = -3

Optional 5:  We can check our answer by plugging in -3 for a and seeing if we get 1/125 when completing the operation:

5^-3 = 1/125

1/(5^3) = 1/125 (rule of exponents states that a negative exponent creates a fraction with 1 as the numerator and the base (5) and exponent (-3 becoming 3) as the denominator

1/125 = 1/125

The length of arc SU in circle T can be calculated using the formula: arc length = (angle/360) * (2 * π * radius), where the angle is measured in degrees and the radius is the distance from the center of the circle to the arc.

In this case, the angle m∠STU is given as 124 degrees, and the length of ST is given as 11 units. To find the length of arc SU, we need to determine the radius of circle T.

Since we don't have the radius explicitly given, we need additional information or measurements to find it. Without knowing the radius, we cannot calculate the length of arc SU. Therefore, we cannot provide a specific answer to this question without additional information.

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Answer:

152%

Step-by-step explanation:

hope this helps!

please mark me as brainliest! thanks!

Answer:

Thanks for the pooints

Step-by-step explanation:

And It would be To be smart.

Answer:

To be ultra brainy so I would’ve have to look for easy questions to answer to earn points on brainly

Step-by-step explanation:

Answer:

10P + 7m = 19 .......... 1

3P + 5m = 10.05 .......... 2

Step-by-step explanation:

Let the cost of pencil be represented by P, and felt-tip by m. So that;

Rodrigo bought 10 pencils and 7 felt-tip at the cost of $19.0.

⇒ 10P + 7m = 19 .......... 1

Melissa bought 3 pencils and 5 felt-tip at the cost of $10.05.

⇒ 3P + 5m = 10.05 .......... 2

From equations 1 and 2,

10P + 7m = 19 .......... 1

3P + 5m = 10.05 .......... 2

Multiply equation 1 by 3, and 2 by 10 to have;

30P + 21m = 57 ......... 3

30P + 50m = 100.5 ....... 4

Subtract equation 3 from 4,

30P - 30P + 50m - 21m = 100.5 - 57

29m =43.5

m = \(\frac{43.5}{29}\)

 = 1.5

m = 1.5

Substitute the value of m in equation 2,

3P + 5m = 10.05 .......... 2

3P + 5(1.5) = 10.05

3P = 7.5 = 10.05

3P = 3

P = 1.0

Thus, the cost of a pencil is $1.0 and that of a felt-tip is $1.5.

Answer:

2 yards by 3 yards by 5 yards

Step-by-step explanation:

6 times 11 times 11 = 726

3(2*3*5) = 6*9*15 = 810

*Please mark brainliest answer

Step-by-step explanation:

it's 9,776 the answer the problem is 9,776

If demand or annual usage increases by 10 percent, the Economic Order Quantity (EOQ) will increase. The EOQ model is used in inventory management to determine the optimal order quantity that minimizes total inventory costs.

The Economic Order Quantity (EOQ) is a model used in inventory management to determine the optimal order quantity that minimizes total inventory costs. It takes into account factors such as demand, holding costs, and ordering costs. When demand or annual usage increases by 10 percent, it means that more units are being consumed or sold within a given time period.

With an increase in demand, the EOQ will also increase. This is because the EOQ formula takes into consideration the trade-off between holding costs and ordering costs. Holding costs are the costs associated with holding inventory, such as warehousing and insurance, while ordering costs are the costs incurred when placing an order, such as administrative and transportation costs.

When demand increases, more units need to be ordered to meet the higher demand. This results in an increase in ordering costs, as more frequent orders will need to be placed. Consequently, the EOQ will increase to find the new optimal order quantity that balances the increased ordering costs with the holding costs.

In summary, if demand or annual usage increases by 10 percent, the EOQ will increase due to the need to order more frequently to meet the higher demand, resulting in increased ordering costs. This adjustment ensures that the inventory management system remains efficient and cost-effective.

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The main difference between trigonal planar and trigonal pyramidal is in their molecular geometry and the arrangement of atoms or groups around a central atom.

In trigonal planar geometry, the central atom is surrounded by three bonding pairs of electrons, resulting in a flat, triangular arrangement. All the bond angles in a trigonal planar molecule are 120 degrees. Examples of molecules with trigonal planar geometry include boron trifluoride (BF3) and formaldehyde (CH2O).

On the other hand, in trigonal pyramidal geometry, the central atom is surrounded by three bonding pairs of electrons and one non-bonding pair (lone pair) of electrons. This arrangement leads to a three-dimensional shape resembling a pyramid, with the lone pair occupying more space than the bonding pairs. The bond angle between the three bonding pairs in a trigonal pyramidal molecule is less than 109.5 degrees due to the repulsion from the lone pair. Ammonia (NH3) and phosphine (PH3) are examples of molecules with trigonal pyramidal geometry.

In summary, the key distinction between trigonal planar and trigonal pyramidal is the presence of a lone pair of electrons on the central atom in trigonal pyramidal geometry, which gives rise to a three-dimensional pyramidal shape. Trigonal planar molecules, in contrast, lack a lone pair and exhibit a flat, triangular arrangement.

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Answer:

140

Step-by-step explanation:

7(2x-3y)

7(2*7-3(-2))

7(14+6)

7(20)

140

Its linear speed would be 1637.75  miles/hour

Vt =  435,49 Km/min

Vt  =  26129 Km/hour

Vt = 16630, 35  miles/hour

The distance from the earth center up to the satellite position is:

Earth radius  + distance above the earth  

radius of satellite  6400 + 1250   =  7650 Km

linear speed = Vt  = 2π*r/T

where

r is the radius of the satellite and T period  =  110 min

Then

Vt  =  6,28* 7650 / 110

Vt = 4804/110

Vt  =  43,674.54 Km/min

To get it in Km/h we must multiply by 60

Vt  =  26204m/hour

And finally, to get it in miles per hour we divide it by 16

Vt = 1637.75  miles/hour

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Answer:

Set your calculator to degree mode.

The figure is not shown. Please sketch it to confirm my answer.

tan(20°) = h/92

h = 92×tan(20°) = about 33.49 feet