PLEASE HELP ME I REALLY NEED ITTT

Hello!

Answer:

13.

Step-by-step explanation:

Given f(x) = x² - x

Solve for 2 · f(3) + 1

Substitute in 3 for 'x' to find the value of f(3):

f(3) = (3)² - (3)

Simplify:

f(3) = 9 - 3 = 6

Plug this into the second equation:

2(6) + 1 = 12 + 1 = 13.

Answer:

\(\huge\boxed{2f(3)+1=13}\)

Step-by-step explanation:

\(f(x)=x^2-x\\\\2f(x)+1=2(x^2-x)+1=2x^2-2x+1\\\\\text{put}\ x=3\ \text{to the equation}\\\\2f(3)+1=2(3^2)-2(3)+1\\\\\text{Use PEMDAS}\\\\2f(3)+1=2(9)-6+1=18-6+1=12+1=13\)

You have the following expression:

In order to calculate the previous expression, use the following property:

Then, for the given expression, you have:

Hence, the result is approximately 2.12

The thickness of the clay layer, which drains only from the upper surface, can be determined based on the consolidation settlement observations. With 50% of consolidation settlement occurring in 1 hour for a 25 mm thick specimen, and a total primary consolidation settlement of 35 mm occurring over many years, the thickness of the clay layer is approximately 87.5 mm.

The consolidation settlement of a clay specimen can be used to estimate the thickness of a clay layer that drains only from the upper surface. In this case, the observed settlement data provides valuable information.

Firstly, we know that 50% of the consolidation settlement occurs in 1 hour for a 25 mm thick clay specimen. This is an important parameter for calculating the coefficient of consolidation (Cv) using Terzaghi's theory. From the Cv value, we can estimate the time required for full consolidation settlement.

Secondly, we are given that the same clay settles 10 mm over 10 years and eventually settles a total of 35 mm over a longer period. This long-term settlement is known as the total primary consolidation settlement. By comparing this settlement value with the settlement data from the oedometer test, we can determine the thickness of the clay layer.

To calculate the thickness, we can use the concept of the consolidation settlement ratio. The ratio of the total primary consolidation settlement to the consolidation settlement at 50% completion is equal to the ratio of the total thickness to the thickness at 50% completion. Applying this ratio, we can determine that the thickness of the clay layer, which drains only from the upper surface, is approximately 87.5 mm.

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Answer:

can you post the whole picture? ill edit my answer to the correct one but i doont know the first parts of the question,,

Step-by-step explanation:

Yes, a test of statistical significance be conducted before or after computing d and interpreting its value.

The p-value is an important phrase for hypothesis testing in the context of statistical significance of data.

The p-value is defined as a function of observed sample outcomes that is used to evaluate statistical hypotheses. Before running the test, a threshold value must be chosen.

The significance is a figure that represents the probability that the outcome of a study occurred entirely by chance. The statistical significance can be low or high. It does not always imply practical significance. When a researcher does not use language carefully in their experiment report, the significance may be misconstrued.

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(a) Basis for the column space: {[2, 7, -2, 2], [-3, -6, 1, -2]}

(b) Rank of the matrix: 2

To find a basis for the column space and the rank of the matrix, we need to perform row operations on the matrix and find the pivot columns. The pivot columns will form a basis for the column space, and the number of pivot columns will give us the rank of the matrix.

Let's perform row operations on the given matrix to reduce it to row-echelon form:

[2  4  -3  -6]

[7  14 -6  -3]

[-2 -4  1   -2]

[2  4  -2  -2]

R2 = R2 - 3*R1

R3 = R3 + R1

R4 = R4 - R1

This gives us:

[2  4  -3  -6]

[1  2  3   3 ]

[0  0  -2  -8]

[0  0  1   4 ]

R3 = (-1/2) * R3

R4 = R4 - (1/2) * R3

[2  4  -3  -6]

[1  2  3   3 ]

[0  0  1   4 ]

[0  0  0   0 ]

Now, we can see that the columns with pivots (leading 1's) are the first and third columns. Therefore, a basis for the column space consists of these two columns:

Basis for column space: [2, 7, -2, 2] and [-3, -6, 1, -2]

The rank of the matrix is the number of pivot columns, which is 2.

Therefore,

(a) a basis for the column space: {[2, 7, -2, 2], [-3, -6, 1, -2]}

(b) the rank of the matrix: 2

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The rewritten statement using quantifiers would be: ∀x ∈ G, |x| = 30 → ∃y ⊆ x, |y| = 5 ∧ ∀z, w ∈ y, z ≠ w → Day(z) = Day(w)
Translation: For any group G of 30 people, there exists a subset y of at least 5 people such that all members of y were born on the same day of the week.

The negation of this statement in English would be: "In a group of 30 people, it is not necessary that there are at least five people who were all born on the same day of the week."

The negation of this statement in logic would be:

∃x ∈ G, |x| = 30 ∧ ∀y ⊆ x, |y| < 5 ∨ ∃z, w ∈ y, z ≠ w ∧ Day(z) ≠ Day(w)

Translation: There exists a group G of 30 people such that for all subsets y of less than 5 people, there exists either no two distinct members of y who were born on the same day of the week or there is no such subset y.

Original statement: In any group of 30 people, there must be at least five people who were all born on the same day of the week.

Rewritten with quantifiers: ∀ groups G of 30 people, ∃ at least 5 people P in G such that all P have the same day of the week for their birthdays.

Negation in English: There exists a group of 30 people in which there are no five people who were all born on the same day of the week.

Negation as a logic statement: ∃ a group G of 30 people such that ∀ 5 people P in G, there is at least one person in P with a different day of the week for their birthday.

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Answer:

Slope is -1

Step-by-step explanation:

Use the equation y = mx + b

By following these steps, you can set up a linear program that will determine a feasible solution to a given system of equations and inequalities.

To set up a linear program to determine a feasible solution to a system of equations and inequalities, you need to follow these steps:
1. Define your variables: Start by identifying the variables in the system of equations and inequalities. Assign them letters, such as x, y, and z, to represent unknown values.
2. Write the objective function: Determine what you want to optimize or minimize in the system. This could be maximizing profit, minimizing costs, or achieving a certain goal. Translate this objective into an equation using the variables defined in step 1.
3. Formulate the constraints: Convert each equation and inequality in the system into linear constraints. Constraints restrict the feasible region where the variables can take values. For example, if you have an equation like 2x + 3y = 10, you can rewrite it as 2x + 3y ≤ 10 and 2x + 3y ≥ 10.
4. Specify the domain: Define the feasible domain for each variable. This could be based on physical constraints or limitations. For example, if x represents the number of units produced, it cannot be negative, so x ≥ 0.
5. Write the linear program: Combine the objective function and constraints to form the linear program. It should have the following general structure:
  - Maximize or minimize: [Objective Function]
  - Subject to: [Constraints]
  - Domain: [Variable Domains]
Remember, we are not solving the linear program at this point; we are only setting it up. This means we do not need to find numerical values for the variables or determine if a feasible solution exists.

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Answer:

4. h=9in

5. 150.8\(m^{2}\)

6. 301.6\(in^{2}\)

Step-by-step explanation:

4.

Surface area of a rectangular prism form : A=2(wl+hl+hw)

Substitute in values from the question: 558=2[(9)(11)+h(11)+h(9)]

Multiply where applicable: 558=2[(99)+11h+9h]

Combine like terms: 558=2[(99)+20h]

Divide both sides by 2: 279=(99)+20h

*note- This step can also be seen as multiplying the right side by 2 without messing with the left at all (558=(198)+40h) then you would solve in the same fashion as I will from here just with the alternative numbering*

Subtract to isolate the h: 180=20h

Divide both sides to isolate the h: 9=h

Now we see that the missing dimension h=9in

*note- I did not bold the equations with squares so please don't be confused by that*

5.

Surface area of a cylinder form: A=2πrh+2π\(r^{2}\)

Substitute in values from the question: A=2π(3)(5)+2π\(3^{2}\)

Multiply were applicable: A≈94.2+56.5

Add remaining values: A≈150.8

Now we see that the total surface area is 150.8\(m^{2}\)

*note- whenever we solve for volume or SA of a figure we square the unit (\(m\)➞\(m^{2}\))*

6.

Surface area of a cylinder form: A=2πrh+2π\(r^{2}\)

Substitute in values from the question: A=2π(6)(2)+2π\(6^{2}\)

*note- we use 6 instead of the given value 12 because the equation calls for the radius and not the diameter*

Multiply were applicable: A≈75.2+226.2

Add remaining values: A≈301.6

Now we see that the total surface area is 301.6\(in^{2}\)

*note- whenever we solve for volume or SA of a figure we square the unit (\(in\)➞\(in^{2}\))*

Hope this helps :)

The distance from Sarah's house to Ian's house is given as follows:

7.28 miles.

The Pythagorean Theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

The parameters for this problem are given as follows:

Hence the distance from Sarah's house to Ian's house is obtained as follows:

d² = 7² + 2²

d² = 53

d = square root of 53

d = 7.28 miles.

The problem asks for the distance from Sarah's house to Ian's house.

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Hey!

Your answers are:

Hope this helps!

Answer:

it was X =5

Step-by-step explanation:

Answer:

Step-by-step explanation:

1.  none

because of 12 is not divisible by five

Thus, the test for homogeneity follows the same procedures as the test for independence because the assumptions for performing the chi-square test for independence and chi-square test for homogeneity are the same.

The procedures for the chi-square test of homogeneity are the same as for the chi-square test of independence. The data is different for both tests. Tests of independence are used to determine whether there is a significant relationship between two categorical variables from the same population. One population is segmented based on the value of two variables. So there will be a column variable and a row variable.

The chi-square test of homogeneity of proportions can be used to compare population proportions from two or more independent samples, determining whether the frequency counts are distributed identically among different populations.

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Answer:

Below

Step-by-step explanation:

1/8 f  /  2/5 hr    =    1/8 * 5/2 = 5/16 fence per hour

The amount of fence completed in 1 hour is A = 5/16

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

1/8 of a fence is built in 2/5 of an hour

Now , the unit rate of work is given by

A = ( 1/8 ) / ( 2/5 )

On simplifying the equation , we get

A = ( 1/8 ) x ( 5/2 )

A = 5/16 per hour

Hence , the amount of fence completed per hour is ( 5/16 )th

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Answer:

72

Step-by-step explanation:

20*3= 60

24*3= 72

So 20 times what equals 60 it’s 3 so multiply it by 3.

Answer:

20$ increasing every month

Step-by-step explanation:

This problem is a slope problem, so his cell phone plan increases by 20$ every month, so solve for slope

\(\frac{120-100}{2-1} =\frac{20}{1} =20\)

Answer:

15

Step-by-step explanation:

because 35 divided by 5 is 7 and 15 divided by 15 is 3 making 7:3

hope it helps

Answer:

0.3125

is the answer

hopes this helps

0.25 in : 12 ft

12 ft → 0.25 in

1 ft → 0.25/12

15 ft → 0.25/12 x 15 = 0.31 inches (nearest inch)

Answer: 0.31 inch

Answer:

224

Step-by-step explanation:

Total marks = x

x * 25% + 64 = x * 40% - 32

x * 15% = 96

x = 640

Maximum Marks = 640..

Marks Scored = 25% of 640

                        = 160
Marks Required to pass = 160 + 64

                                        = 224

The total surface area of the remaining portion is approximately 23.14 in.

To find the total surface area of the remaining portion of a wooden sphere after two equal caps have been removed, use the formula SA = 4πr2. A sphere is symmetrical, and thus, the diameter of the wooden sphere is equal to the diameter of the remaining portion. The radius of the remaining portion is equal to half the diameter of the sphere minus the radius of the cap.

The diameter of the wooden sphere is 11.8 in. As such, the radius of the sphere is 5.9 in. If two equal caps are removed, the diameter of the remaining portion is equal to 11.8 in - 2x R_cap, where R_cap is the radius of the cap. Since the caps are equal, we can simplify the formula to

D = 11.8 - 2R_cap. R_cap is equal to the radius of a circle with area equal to the surface area of one cap. As such, we can use the formula SA = 2πrh + πr2 to find the surface area of the cap. We know the diameter of the sphere is 11.8 in. Thus, the radius of the sphere is 5.9 in. We also know that the height of the cap is 5.9 in. Since the caps are equal, we can use the formula to find the surface area of one cap and multiply by 2 to get the total surface area of both caps.

SA_cap = 2π(5.9 in)(5.9 in) + π(5.9 in)

2SA_cap = 2π(34.84 in2) + π(34.84 in2)

SA_cap = 2π(34.84 in2) + 109.45 in2SA_cap ≈ 219.74 in

Since the surface area of the cap is equal to 219.74 in, we can use the formula to find the radius of the cap.

219.74 in = 2πrh + πr22(219.74 in2)

= 2π(5.9 in)h + π(5.9 in)22(219.74 in2)

= 37.699 in2 + 109.45 in23r2

= 72.533 in2r ≈ 4.545 in

Using the formula D = 11.8 - 2R_cap, we can find the diameter of the remaining portion of the wooden sphere.

D = 11.8 - 2(4.545 in)D ≈ 2.71 in

The radius of the remaining portion of the wooden sphere is equal to 5.9 in - 4.545 in. Thus, the radius of the remaining portion of the sphere is 1.355 in. Finally, we can find the total surface area of the remaining portion of the sphere.

SA = 4πr2SA = 4π(1.355 in)2SA ≈ 23.14 in

Therefore, the total surface area of the remaining portion is approximately 23.14 in.

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Answer: 8 more dogs.

Step-by-step explanation:

All you have to do is subtract 10 by 2 and you’ll get your answer.

Answer:

2

Step-by-step explanation:

Answer:35

Step-by-step explanation:

The volume of a cylinder is calculated by multiplying the area of its base by its height. The formula for the volume of a cylinder is V = πr²h, where r is the radius of the base and h is the height.

The volume of a cone is calculated by multiplying the area of its base by its height and then dividing by 3. The formula for the volume of a cone is V = (1/3)πr²h, where r is the radius of the base and h is the height.

Since Sonequa’s two containers have equal radii and equal heights, it can be concluded that the volume of the cylinder is three times the volume of the cone. This means that if Sonequa fills the cone with water and pours it into the cylinder, she will need to repeat this process three times to fill the cylinder completely.

So, the claim that is most likely to be supported using the result of Sonequa’s investigation is: “The volume of a cylinder with the same radius and height as a cone is three times greater than the volume of the cone.”

Answer:

9/32

Step-by-step explanation:

3/4 of 3/8 is 0.28125 or 9/32

Answer:

Step-by-step explanation:

3/8 (left over - from party) of 3/4 : 3/4 of 3/8 = 9/32

Answer:

its 120 degrees

Step-by-step explanation:

add up all the know angles (110.60,70) then take that number and subtract it from 360, (360 is the number you get if you add all sides four sided shape)  

The measure of the value of g is, 60° by definition of alternate angles of parallel lines.

Parallel lines are those lines that are equidistance from each other and never intersect each other. and, Parallel lines are lines in a plane that are always the same distance apart and never intersect. But Perpendicular lines are lines that intersect at a right (90 degrees) angle.

We have to given that;

Two parallel lines are shown in image.

And, The measure of b = 110°

Here,

By the figure, we have;

A transverse line cut the parallel lines.

And, Both angles 60 and g are alternate angles of parallel lines.

We know that;

The alternate angles of parallel lines are equal to each other.

Hence, The value of measure of g = 60°

So, We get by the definition of alternate angles of parallel lines,

⇒ The measure of g = 60°

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Answer:

No

Step-by-step explanation:

The solution of the system of inequalities is the intersection region of all the solutions in the system. Example 1: Solve the system of inequalities by graphing: y≤x−2y>−3x+5. First, graph the inequality y≤x−2 .

Parametrization of equations x=x(t), y=y(t) for f(x)=x^8−x^2−6 from (5,−4) to (9,−1) is that parametrization does indeed connect the points (5, -4) and (9, -1).

A parametrization for the curve that connects the points (5, -4) and (9, -1) given by the function f(x) = \(x^8 - x^2 - 6.\)

To do this, we can use the parameter t to represent points on the curve as follows:

x(t) = 5 + 4t, since we want x to start at 5 and end at 9, so we need to add 4 to x over the interval [0, 1].

Substituting this into our function f(x), we get:

y(t) = f(x(t)) = \((5 + 4t)^8 - (5 + 4t)^2 - 6\).

Therefore, our parametrization is:

x(t) = 5 + 4t

y(t) = (5 + 4t)^8 - (5 + 4t)^2 - 6

To verify that this parametrization does indeed connect the points (5, -4) and (9, -1), we can check that x(0) = 5, x(1) = 9, y(0) = f(5) = -4, and y(1) = f(9) = -1.

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