HELP ME FOR BRIANETEST

Answer:

Step-by-step explanation:

8% of the original value tells you the amount of the increase:

  increase = $249,000 × 0.08 = $19,920 . . . increase in value

The current value is the increase added to the original value:

  $249,000 +19,920 = $268,920 . . . current house value

To prove that (g∘f^(-1))(U) = f^(-1)(g^(-1))(U) for sets U, we need to show that the composition of functions g∘f^(-1) and f^(-1) yields the same result when applied to set U.

Let's break down the proof step by step:

(g∘f^(-1))(U): This represents the composition of functions g and f^(-1) applied to set U. It means that we first apply f^(-1) to U and then apply g to the result.

f^(-1)(g^(-1))(U): This represents the composition of functions f^(-1) and g^(-1) applied to set U. It means that we first apply g^(-1) to U and then apply f^(-1) to the result.

To show that these two compositions yield the same result, we need to prove that their outputs are equal.

Let's take an arbitrary element y from (g∘f^(-1))(U) and show that it also belongs to f^(-1)(g^(-1))(U), and vice versa.

Suppose y is an element of (g∘f^(-1))(U). This means there exists an x in U such that y = g(f^(-1)(x)). Applying f^(-1) to both sides, we get f^(-1)(y) = f^(-1)(g(f^(-1)(x))). Since f^(-1)(f^(-1)(x)) = x, we have f^(-1)(y) = x. Therefore, f^(-1)(y) belongs to f^(-1)(g^(-1))(U).

Suppose y is an element of f^(-1)(g^(-1))(U). This means there exists an x in U such that y = f^(-1)(g^(-1)(x)). Applying g to both sides, we get g(y) = g(f^(-1)(g^(-1)(x))). Since g(g^(-1)(x)) = x, we have g(y) = x. Therefore, g(y) belongs to (g∘f^(-1))(U).

Since any element y that belongs to one composition also belongs to the other, we can conclude that (g∘f^(-1))(U) = f^(-1)(g^(-1))(U).

This proves the desired result: (g∘f^(-1))(U) = f^(-1)(g^(-1))(U) when U is a subset of Z.

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Answer:

EASY. x=-3

Step-by-step explanation:

You need to divide 21 by -7. You'll get the same answer as me

Hope this helped!!

Answer:

\( \sf \: x = - 3\)

Step-by-step explanation:

Given equation,

\( \sf \rightarrow \: \frac{21}{x} = - 7\)

Now the value of x will be,

\( \sf \rightarrow \: \frac{21}{x} = - 7 \)

\( \sf \rightarrow \: - 7x = 21\)

\( \sf \rightarrow \: x = \frac{ \: 21 \: }{ - 7 \: } \)

\( \sf \rightarrow \boxed{ \sf x = - 3}\)

Hence, the value of x is -3.

Answer:

12

Step-by-step explanation:

Answer:

It is

Step-by-step explanation:

Parralel Lines. Since they have the same opposite angles, they will never touch, being parallel

Given that X₁, X₂,..., X is a random sample from an exponential family with the following probability density function, f(x 0) = exp (0T(x) + d(0)+ S(x)).

To form the hypothesis for the exponential family, we need to consider the null and alternative hypothesis.

Null hypothesis: 0= 0

Alternative hypothesis: 0 ≠ 0

Explanation: The exponential family is a class of distribution families. The density of an exponential family is given by the following expression:

f(x|θ) = h(x) exp{θT(x) − A(θ)},

where h(x) is a nonnegative function of the data that does not depend on the parameter θ and A(θ) is a normalizing function.

The parameter θ is typically called the natural parameter, and T(x) is the vector of sufficient statistics. The exponential family of distributions includes the normal, exponential, chi-squared, gamma, and beta distributions, among others. In hypothesis testing for the exponential family, we typically specify a null hypothesis and an alternative hypothesis, just as in other types of hypothesis testing. The test statistic is usually a ratio of two likelihood ratios.

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For the transformation at -78 °C, appropriate reagents include lithium aluminum hydride (LiAlH4) and diethyl ether.

At -78 °C, certain chemical reactions require the use of specific reagents to achieve the desired transformation. One commonly used reagent is lithium aluminum hydride (LiAlH4), which acts as a strong reducing agent. It is capable of reducing various functional groups, such as carbonyl compounds, to their corresponding alcohols.

Diethyl ether is typically employed as a solvent to facilitate the reaction and ensure efficient mixing of the reactants. Researchers often utilize this low temperature for reactions involving sensitive or reactive intermediates, as it helps control the reaction and prevent unwanted side reactions.

The use of LiAlH4 and diethyl ether provides a reliable combination for achieving the desired transformation at this temperature, enabling chemists to manipulate and modify compounds in a controlled manner.

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Answer:

11/12

Step-by-step explanation:

To solve for x, we just need to compute the inverse of A (if it exists) and multiply it by b. If A is invertible, then this method will give us the unique solution to the linear system Ax=b.

To solve a linear system of the form Ax=b using inverse matrices, we can first find the inverse of matrix A (if it exists) and then multiply both sides of the equation by \(A^-1\), giving us:

\(A^-1Ax = A^-1b\)

Since\(A^-1A\) is the identity matrix I, we can simplify the left-hand side to just x:

\(x = A^-1b\)

However, it's worth noting that computing the inverse of a matrix can be computationally expensive, particularly for large matrices.

So, while using inverse matrices can be a useful technique for solving small systems, it may not be the most efficient approach for larger systems. In those cases, other techniques such as Gaussian elimination or LU decomposition may be more appropriate.

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Without the degrees of freedom, we cannot provide a specific p-value. If the chi-square statistic is 2.71 or more, the p-value will be equal to or less than the value corresponding to 2.71 in the chi-square distribution table for the given degrees of freedom.

1. The chi-square statistic is a measure of the difference between observed and expected frequencies in a contingency table. When the observed frequencies are similar to the expected frequencies, the chi-square statistic is low. When they are different, the chi-square statistic is high.

2. The p-value is a probability that indicates how likely it is to observe a chi-square statistic as extreme as the one obtained, assuming the null hypothesis (i.e., no association between the variables) is true. A lower p-value means there is stronger evidence against the null hypothesis, suggesting an association between the variables.

3. To determine the p-value corresponding to a chi-square statistic of 2.71, you would look up the value in a chi-square distribution table or use statistical software. The p-value depends on the degrees of freedom, which is determined by the size of the contingency table.

Without the degrees of freedom, we cannot provide a specific p-value. However, if the chi-square statistic is 2.71 or more, the p-value will be equal to or less than the value corresponding to 2.71 in the chi-square distribution table for the given degrees of freedom.

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Answer:

16x25x15=6000

4+11÷2=9.5

Step-by-step explanation:

1) 16x25x15 is 16 times 25 times 15, which is 6000

2) This question requires BIDMAS/BODMAS. As you start with the multiplication (Brackets Indices Multi Divide Add Subtract) 11÷2 = 5.5, 5.5+4=9.5

The total volume of air inside six of jake's basketball is 2140.92 \(in^{3}\).

The volume of a sphere is the measurement of the space it can occupy. A sphere is a three-dimensional shape that has no edges or vertices. In this short lesson, we will learn to find the volume of a sphere, deduce the formula for the volume of a sphere and learn to apply the formulas as well. Once you understand this chapter you will learn to solve problems on the volume of the sphere. The volume of the sphere formula can be given for a solid as well as the hollow sphere. In the case of a solid sphere, we only have one radius but in the case of a hollow sphere, there are two radii, having two different values of radius one for the outer sphere and one for the inner sphere.

If the radius of the sphere formed is r and the volume of the sphere is V. Then, the volume of the sphere is given by:

Volume of Sphere, V = (\(\frac{4}{3}\))π\(r^{3}\)

Given, Diameter of the ball = 8.8in

radius = 8.8/2 = 4.4in

So, we have to find the volume of air inside the ball= volume of ball = 4/3pir3

V = So, the volume of the ball is 356.22 \(in^{3}\)

This means the volume of 6 balls = 6x 356.82 =2140.92 \(in^{3}\)

The volume of 6 balls is 2140.92 \(in^{3}\).

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Taking into account the definition of a system of linear equations, the cost of one ticket is $11 and the cost of one tub of popcorn is $6.

A system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.

In the systems of equations, the values of the unknowns must be found, with which when replacing, they must give the solution proposed in both equations.

In this case, a system of linear equations must be proposed taking into account that:

You know that:

The system of equations to be solved is

4t + 2p= 56

3t + 3p= 51

There are several methods to solve a system of equations and it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.

In this case, isolating the variable "p" from the first equation:

2p= 56 - 4t

p= (56 - 4t)÷ 2

p= 56÷2 - (4÷2)t

p=28 -2t

Replacing this expression in the second equation:

3t + 3×(28 -2t)= 51

Solving:

3t + 3×28 -3×2t= 51

3t + 84 -6t= 51

3t -6t= 51 - 84

-3t= -33

t= (-33)÷(-3)

t= 11

Remembering that p=28 -2t, you get:

p=28 -2×11

p=28 - 22

p= 6

In summary, each ticket cost $11 and each tub of popcorn cost $6.

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Answer:

9 preregistered

Step-by-step explanation:

It is saying that 17 went in total, but 8 of those 17 didn't register, but how many did, so:

17 - 8 = 9

Explanation:

1 hat = 45 dollars

6 hats = 6*45 = 270 dollars

1 phone = 40 dollars

4 phones = 4*40 = 160 dollars

total = $270 + $160 = $430

Felicia spent a total of $430. Since this amount of money leaves her account, this means we write a negative sign out front to end up with the final answer of -430

In other words, her account balance went down by $430 which is why we use a negative. If someone gave her $430, then the answer would be positive.

The given statement "regard to resistance training for youth, progression should be based on postural control and not the amount of weight that can be used." is true.

In order to create sufficient motor output to maintain a controlled, upright posture, our central nervous system (CNS) manages sensory input from those other systems in a process called as postural control. The primary sensory receptors involved in postural control and balance are the somatosensory, vestibular, and visual systems.

Postural control's 2 main objectives are postural orientation and balance.

For the purposes of carrying a particular activity, postural orientation entails the ability to maintain an acceptable relationship between the body's parts (ortho) and between the and the environment (using various sensory inputs).

Postural stability is accomplished when sensorimotor mechanisms are coordinated to maintain the body's center of mass across both identity and externally induced stimuli.

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Answer:

7 bows

Step-by-step explanation:

I will assume that the numbers are \(1\frac{1}{4}\) and \(8\frac{3}{4}\). To find the answer, we can do:

\(8\frac{3}{4} / 1\frac{1}{4}\\ = \frac{35}{4} / \frac{5}{4} \\= \frac{35}{4} * \frac{4}{5}\\= \frac{35}{5}\)

= 7 bows

Answer:The solution is in the attached file

Step-by-step explanation:

Answer:

\(y = -1x + 4\)

Step-by-step explanation:

Hello!

The equation of a line is written in slope-intercept form.

Slope - Intercept Form: \(y = mx + b\)

The slope of the line is the rate of change, or how much the y-values change as x-values change.

Slope is calculated by the Rise of the graph divided by the Run of the graph. Rise is how much the graph goes up or down between 2 points, while Run is how much the graph goes left or right between 2 points.

Points: (0,4) and (4,0)

Calculate:

The slope is -1.

The y-intercept is where the graph intersects the y-axis (x = 0).

The graph intersects it at (0,4), so the y-intercept is 4.

We can plug in the values for slope and y-intercept to find the equation.

Equation: \(y = -1x + 4\)

Answer:

55°

Step-by-step explanation:

180°-70°=110° (sum of angles on a straight line gives 180°

The size of each of the four remaining angles=110°/4 = 27.5°

<X + <Y = 27.5° + 27.5°=55°

Answer:

Step-by-step explanation:

B/4=3.2

B=12.8

Answer:

The probability that the ball is:

Red - 20:60 (simplified is 1:3)

Yellow - 15:60 (simplified is 1:4)

Blue - 25:60 (simplified is 5:12)

Red or yellow - 35:60 (simplified is 7:12)

Answer:

30 kids

Step-by-step explanation:

Answer:

50.27 cm

Step-by-step explanation:

We Know

The area of the circle = r² · π

Area of circle = 64π cm²

r² · π = 64π

r² = 64

r = 8 cm

Circumference of circle = 2 · r · π

We Take

2 · 8 · (3.1415926) ≈ 50.27 cm

So, the circumference of the circle is 50.27 cm.

Answer: C=16π cm or 50.24 cm

Step-by-step explanation:

The formula for area and circumference are similar with slight differences.

\(C=2\pi r\)

\(A=\pi r^2\)

Notice that circumference and area both have \(\pi\) and radius.

\(64\pi=\pi r^2\)        [divide both sides by \(\pi\)]

\(64=r^2\)             [square root both sides]

\(r=8\)

Now that we have radius, we can plug that into the circumference formula to find the circumference.

\(C=2\pi r\)          [plug in radius]

\(C=2\pi 8\)          [combine like terms]

\(C=16\pi\)

The circumference Is C=16π cm. We can round π to 3.14.

The other way to write the answer is 50.24 cm.

Answer:

4 feet and 3 inches

Step-by-step explanation:

The measure of ladder in feet is 4.15.

Given that, a ladder is 51 inches tall.

Metric Conversion refers to the conversion of the given units to desired units for any quantity to be measured.

We know that, 1 feet = 12 inches

So, in inches = 51/12

= 4.25 feet

Therefore, the measure of ladder in feet is 4.15.

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At 128 BPM, a single 32-count phrase takes 15 seconds to complete.

Instructors use 32-count phrasing as a method to track time and repetitions during class.

To determine how many seconds a single 32-count phrase takes to complete at 128 BPM (beats per minute), we can use the following calculation:

First, find the time per beat:

1 minute / 128 beats = 0.46875 seconds per beat

Next, multiply the time per beat by the number of counts in the phrase:

0.46875 seconds per beat * 32 counts = 15 seconds

So, at 128 BPM, a single 32-count phrase takes 15 seconds to complete. This phrasing method helps instructors maintain a consistent tempo and allows for smooth transitions between exercises in class, ensuring an effective and enjoyable workout experience.

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The corresponding solutions of equations a, b, c and d are 3.35. 41.2, 7.36 and 613.2

a. 33.5 ÷ 10 = 3.35

b. 412 ÷ 10 = 41.2

c. 73.6 ÷ 10 = 73.6

d. 6,132 ÷ 10 = 613.2

When a number is divided by powers of 10, the decimal point moves to the left side by the number of places the power has  e.g

345 ÷ 10 = 34.5 (It moves one place to the left because the power of 10 is 1 i.e. 10 = 10²)

3456 ÷ 100 = 34.56 (It moves two places to the left because the power of 100 is 2 i.e. 10 = 10²)

Therefore, the solution of a, b, c and d are 3.35. 41.2, 7.36 and 613.2 respectively.

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The equation in percentage given by, $2.21 + 8% tax = $2.3868 rounds to $2.4 to the nearest tenth.

Given an equation,

$2.21 + 8% tax = $2.3868

This is an equation which relates the cost including the percentage of tax.

When 2.21 is added to the tax amount, we get $2.3868.

2.21 + (0.08 × 2.21) = 2.3868

Here it is not mentioned up to what decimal we have to round the figure.

If 2.3868 is rounded to the nearest whole number, it becomes 2.

If 2.3868 is rounded to the tenth, it becomes 2.4.

If 2.3868 is rounded to the hundredth, it becomes 2.39.

Hence the rounded amount to the nearest tenth is $2.4.

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Answer:

Obtuse, scalene

Step-by-step explanation:

No same values for sides. So, scalene. Since 7^2 > 6^2 + sqrt5 ^2 , this triangle is obtuse.