which of the following is equal to |-8+4|?

Answer:

y/mz

Step-by-step explanation:

Answer:(5,4)

Step-by-step explanation:

Answer:

(5,4)

Step-by-step explanation:

If we sample the function x(t) = cos(75t) at the Nyquist frequency, the resulting discrete frequency would be half of the Nyquist frequency, which is equal to half of the highest frequency component in the continuous signal.

In this case, the highest frequency component in x(t) is 75 Hz, as determined by the coefficient of t in the cosine function. According to the Nyquist-Shannon sampling theorem, to accurately represent a signal, the sampling frequency must be at least twice the highest frequency component. Therefore, the Nyquist frequency in this scenario would be 2 * 75 Hz = 150 Hz.

Since we are sampling at the Nyquist frequency, the resulting discrete frequency would be half of the Nyquist frequency, which is 150 Hz / 2 = 75 Hz. Hence, when sampling x(t) at the Nyquist frequency, the resulting discrete frequency would be 75 Hz.

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Answer:

Step-by-step explanation:

15 - x = 3x + 3

15 - x = 3•x + 3

4x = 12

x = 3

Sorry, I change the b and a into x's if that's fine with you.

It is test of two independent population means. So right should be option (a) "t for two population means (independent samples)" is correct.

Here we want to test the frequency on week days that is felonies tends to be committed more often on weekends (Saturday and Sunday) than on weekdays (Monday through Friday).

Here null hypothesis

H(0): means (Saturday and Sunday) = mean (Monday through Friday)

Alternative Hypothesis

H(1): mean (Saturday and Sunday) > mean (Monday through Friday)

So it is test of two independent population means. So right should be option (a) "t for two population means (independent samples)" is correct.

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The right question is:

To determine whether felonies tend to be committed more often on weekends (Saturday and Sunday) than on weekdays (Monday through Friday), a sociologist classifies a random sample of records of convicted felons in terms of these two categories. The appropriate statistical test is a:

a) t for two population means (independent samples).

b) t for population correlation coefficient.

c) one-variable chi-square.

d) two-factor F

Answer:

a=360

Step-by-step explanation:

3600 divided by 10 is 360

Answer:

no diagram

Step-by-step explanation:

no diagram is attached

Answer:

linear algebra, an n-by-n square matrix A is called invertible, if there exists an n-by-n square matrix B such that \mathbf {AB} =\mathbf {BA} =\mathbf {I} _{n}\ where Iₙ denotes the n-by-n identity matrix and the multiplication used is ordinary matrix multiplication.

Answer:

Brainliest pls

Step-by-step explanation:

The inverse of a square matrix A, denoted by A-1, is the matrix so that the product of A and A-1 is the Identity matrix.

Answer:

use cymath for answer

Step-by-step explanation:

it will explain better

Answer:

C

Step-by-step explanation:

Lemon juice and sugar are the solutes.

Given,

Five cups of water, one cup of lemon juice, and three-fourths of a cup of sugar are used to make a pitcher of lemonade.

We have to find the solutes in the mixture;

Solutes;

Anything dissolved in a solution is referred to as a solute. In a fluid solution, the amount of solvent always outweighs the amount of solute. Two of the most prevalent solutes in our daily lives are salt and water. Salt is the solute because it dissolves in water.

Here,

In lemonade, lemon juice and sugar dissolves in water.

So, we can conclude that;

Water is solvent and lemon juice and sugar are the solutes

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Step-by-step explanation:

1-2cos²c.

> (cos²c+sin²c)-2cos²c. (cos²c+sin²c=1)

> cos²c+sin²c-2cos²c

> sin²c-cos²c.

is your correct answer.

hope this helps you.

Answer:

4 - 12x

Step-by-step explanation:

-6(-2/3 + 2x)

we can distribute by multiplying -6 by whats inside of the parenthesis ( -2/3 and 2x )

-6 * -2/3 = 4

-6 * 2x = -12x

4 - 12x would be the equivalent expression

Given expression to us is ,

→ -6( -2/3 +2x)

Simplify by multiplying each terms inside the brackets by -6 .

→ -6*-2/3 + 2x*(-6)

Simplify,

→ 4 -12x

Hence option 3 is correct .

I hope this helps .

An equilateral triangle is a type of triangles which can always be used as a counterexample to the statement ""all angles in a triangle are acute"".

What is acute angle?

An acute angle is one that is smaller than 90 degrees in length. If the arms of an angle open up less than a "L," an acute angle is created because a "L" shape forms at 90°.

What are obtuse angle?

Angle between 90 to 180 are known as obtuse angle.

Because an equilateral triangle is likewise equiangular, it can be used as a counterexample. So, each angle has a 360/3=60 measurement. Two angles are therefore acute angle , and the third's measure is also acute.

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Answer:

slope = 4

Step-by-step explanation:

calculate the slope m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (- 2, - 13) and (x₂, y₂ ) = (2, 3) ← 2 ordered pairs from the table

m = \(\frac{3-(-13)}{2-(-2)}\) = \(\frac{3+13}{2+2}\) = \(\frac{16}{4}\) = 4

Answer:

45f - 42

Step-by-step explanation:

-5(-9f + 7) - 7

Expand -5(-9f +7) = -5(-9f) + (-5)(7) = +45f -35 or simply 45f - 35

5(-9f + 7) - 7  becomes 45f - 35 - 7 = 45f - 42

Answer:

Its an Obtuse angles

Step-by-step explanation:

x+79=2x-37

(x+79)+(-79)=(2x-37)+(-79)

x+79-79=(2x-37)-79

x=2x-37-79

x=116

An obtuse angle has a measurement greater than 90 degrees but less than 180 degrees.

Answer:

One third of 24

Step-by-step explanation:

because 3 is a whole number smaller than 4 so the answer would be 3/24 not 4/16.  

Answer:

What is x-2+5x = 6x-2

What is -4x-10+6x = 2x-10

What is 7+10x+4x-8 = -4x+9

Step-by-step explanation:

Answer:

0.64285714285

Step-by-step explanation:

Brainliest?

Answer:

2  1666667/10000000

Step-by-step explanation:

you will divide 3/4 by 1/2 which is 1   1/2 and then you will ad 2/3 to that which will give you 2 1666667/10000000

The total number of stories the students should write to keep the ratio of Mary's stories to total stories the same when the number of Mary's stories increases to 12, is 12.

To determine the number of total stories the students should write in order to keep the ratio of Mary's stories to total stories the same when the number of Mary's stories increases to 12, we need to establish the initial ratio and then use it to calculate the total number of stories.

Let's denote the initial number of Mary's stories as M and the initial number of total stories as T. The initial ratio of Mary's stories to total stories is M/T.

If the number of Mary's stories increases to 12, we have M = 12.

To keep the ratio the same, we can set up the equation:

M/T = 12/T

Now, we can solve for the total number of stories (T) by cross-multiplying:

M * T = 12 * T

T = (12 * T) / M

Simplifying further:

T = 12

Therefore, the total number of stories the students should write to keep the ratio of Mary's stories to total stories the same when the number of Mary's stories increases to 12, is 12.

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Answer: 20 weeks in 1 week

in 2 weeks 40

Step-by-step explanation:

This proves that the equation is true

Answer:56

Step-by-step explanation:

I think cuz I multiplied 7x2x4

Answer:

Step-by-step explanation:

d = r* t

d/t = r

2.5/1.25=2 MPH

The square has a 48 centimeter perimeter.

To find the perimeter of the square, we need to calculate its side length. The area of a rectangle is given by its length multiplied by its width, so we can use the given measurements of the rectangle to calculate its area: 25 cm x 16 cm = 400 cm². The area of a square is given by the square of its side length, so we can use the area of the rectangle to calculate the side length of the square: √400 cm² = 20 cm.

Thus, the perimeter of the square is equal to 4 times its side length, or 4 x 20 cm = 80 cm.

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The points on the curve where the tangent is horizontal: (1, 0) & (-1, 0),  and where the tangent is vertical: (0, 1) & (0, -1)

To find the points on the curve x=cos(theta) where the tangent is horizontal or vertical, we need to find the derivative of x with respect to theta.

Taking the derivative of x with respect to theta, we get:

dx/dtheta = -sin(theta)

When the tangent is horizontal, the derivative is equal to zero. So we need to solve the equation -sin(theta) = 0 for theta.

This equation is true when theta = n*pi, where n is an integer. So the points on the curve x=cos(theta) where the tangent is horizontal are:

(1, 0) for n=2k, where k is an integer

(-1, 0) for n=2k+1, where k is an integer

When the tangent is vertical, the derivative is undefined. This happens when cos(theta) = 0, which is true when theta = (2k+1)*pi/2, where k is an integer.

So the points on the curve x=cos(theta) where the tangent is vertical are:

(0, 1) for n=2k+1, where k is an integer

(0, -1) for n=2k, where k is an integer

Therefore, the points on the curve where the tangent is horizontal are (1, 0) and (-1, 0), and the points on the curve where the tangent is vertical are (0, 1) and (0, -1).

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If lidocaine is injected intra-arterially, it can quickly lead to systemic toxicity. The first signs of toxicity may include circumoral numbness and tongue paresthesia, but these symptoms may be followed by more severe manifestations such as dizziness, seizures, and cardiac arrest.

The systemic effects of lidocaine are dose-dependent, meaning that the higher the dose, the more severe the symptoms.

Lidocaine is a local anesthetic that is commonly used for minor surgical procedures or dental work. It works by blocking the nerve signals that transmit pain to the brain. However, if it is injected into an artery, it can rapidly spread throughout the body and affect other organs, leading to potentially life-threatening complications.

If you suspect that a patient has been injected with lidocaine intra-arterially, it is important to act quickly. The first step is to stop the injection and monitor the patient closely for signs of toxicity. If the patient is experiencing severe symptoms, such as seizures or cardiac arrest, emergency treatment should be initiated immediately. Treatment may include administering medications to counteract the effects of the lidocaine or performing cardio-pulmonary resuscitation (CPR) if necessary.

In conclusion, the first signs of lidocaine toxicity may include circumoral numbness and tongue paresthesia, but more severe symptoms may follow, such as dizziness, seizures, and cardiac arrest. If you suspect that a patient has been injected with lidocaine intra-arterially, it is important to act quickly to prevent potentially life-threatening complications.

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Answer:

4x+28

Step-by-step explanation:

Hi there! :)

The Distributive property is here to help us simplify!

Let's remember what this useful property states.

It states that

a(b+c)=ab+ac

Now, let's use this property to simplify the given expression:

4(x+7)

4x+28

Hope it helps!

Enjoy your day!

\(\bf{-Misty ~Sparkles-\)

(a) Matrix for relation R {(a, b) | a > b} has 4950 nonzero entries.

(b) Matrix for relation R {(a, b) | b - a = 51} has 49 nonzero entries.

(c) Matrix for relation R {(a, b) | ab is a multiple of 3} has 5644 nonzero entries.

Let's analyze each relation separately to determine the number of nonzero entries in the corresponding matrix.

(a) Relation R: {(a, b) | a > b}

In this case, for every pair (a, b) in the relation, a must be greater than b. We need to count the number of such pairs.

Since the set A consists of the first positive 100 integers, we have 100 choices for a. For each a, there are (a - 1) choices for b (all the integers less than a). Thus, the number of pairs (a, b) satisfying a > b is:

Number of pairs = 99 + 98 + ... + 1 = (99 × 100) / 2 = 4950

Therefore, the matrix representing relation R has 4950 nonzero entries

(b) Relation R: {(a, b) | b - a = 51}

In this case, for every pair (a, b) in the relation, the difference between b and a is 51. We need to count the number of such pairs.

Since the set A consists of the first positive 100 integers, we can choose a from 1 to 49 (inclusive), as for any greater than 49, b would exceed 100.

Thus, the number of pairs (a, b) satisfying b - a = 51 is:

Number of pairs = 49

Therefore, the matrix representing relation R has 49 nonzero entries.

(c) Relation R: {(a, b) | ab is a multiple of 3}

In this case, for every pair (a, b) in the relation, the product of a and b must be a multiple of 3. We need to count the number of such pairs.

Since the set A consists of the first positive 100 integers, we have 100 choices for both a and b.

To calculate the number of pairs (a, b) satisfying ab is a multiple of 3, we need to exclude the pairs where both a and b are not multiples of 3.

Number of pairs = (100 × 100) - (66 × 66) = 10000 - 4356 = 5644

Therefore, the matrix representing relation R has 5644 nonzero entries.

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Answer:

f = 8

Step-by-step explanation:

I hope this helps!

Answer:

f=8

Step-by-step explanation:

Step 1: Distribute

2(f) + 2(-5) = 6

2f - 10 = 6

Step 2: Add 10 to both sides to get 2f alone

2f = 16

Step 3:  Divide both sides by 2 to get f alone

f = 8

Answer:

Step-by-step explanation:

False.

The sum of two eigenvectors of a linear operator that correspond to the same eigenvalue is not necessarily an eigenvector. Eigenvectors are defined as non-zero vectors that, when multiplied by a linear operator, result in a scalar multiple of themselves. While eigenvectors corresponding to the same eigenvalue share the property of being scaled by the same scalar factor, their sum does not generally satisfy the eigenvector condition. In fact, the sum of two eigenvectors with the same eigenvalue may result in a vector that is not even parallel to the original eigenvectors. Therefore, the statement that the sum of two eigenvectors corresponding to the same eigenvalue is again an eigenvector is false.

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