Math help please due soon thanks

The second term of the expression 3a - 9b + 12c - 15d is -9b. The coefficient of -9b is -9.

What is an expression?

Mathematical expressions consist of at least two numbers or variables, at least one math operation, and a sentence. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given expression is 3a - 9b + 12c - 15d.

The first term of the expression is 3a.

The second term of the expression is -9b.

The third term of the expression is 12c.

The fourth term of the expression is -15d.

A coefficient in mathematics is a multiplicative factor in a polynomial term, a series term, or an expression. It is typically a number, but it can also be any expression. They may also be referred to as parameters if the coefficients are variables in and of themselves.

The variables are a, b, c, d.

The coefficient of -9b is -9.

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As a result, the function g(x) = -2sec(3x + 4) + 1 has a range of [0, 1].

A function is a mathematical relationship between a set of inputs (called the domain) and a set of possible outputs (called the range). The function assigns exactly one output, called the value of the function, to each input in the domain. Functions are commonly represented as expressions or formulas. For example, the function f(x) = x^2 + 2x + 1 maps inputs x to outputs y, where y = x^2 + 2x + 1. The input x is called the independent variable and the output y is called the dependent variable, as the value of y depends on the value of x. Functions are used in many areas of mathematics, science, engineering, and technology to model real-world situations and to make predictions and decisions based on data. Functions can be linear or nonlinear, continuous or discrete, and can have various forms and properties, such as symmetry, inverse functions, and maxima and minima.

Here,

The range of a function is the set of all possible values that the function can take. To find the range of the function g(x) = –2sec(3x + 4) + 1, we can evaluate the function for different values of x and find the minimum and maximum values of the function.

sec(θ) is positive for all values of θ, so sec(3x + 4) is always positive. Since the function g(x) = –2sec(3x + 4) + 1, the value of the function will always be between 1 and -1 + 1 = 0.

Therefore, the range of the function g(x) = –2sec(3x + 4) + 1 is [0, 1].

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Answer:

y =  -5/3x+ 4

Step-by-step explanation:

slope is -5/3 and y-intercept is 4

Independent variable and dependent variable

What occurs as a result of the independent variable is referred to as a dependent variable.

We anticipate that independent variables will have an impact on dependent variables.

Eg. You plan a study to see if variations in the room's temperature have an impact on students' math test results.

The inside temperature of the space is your independent variable. By making the room cooler for half the participants and warmer for the other half, you can change the temperature.

Test results in mathematics are your dependent variable. Using a standardised test, you measure each participant's math prowess to see if there are any temperature-related differences.

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The correct statement is: 'In any experiment, the cause is called the dependent variable, while the effect or result is called the independent variable.'

We know that an independent variable is a variable which is not changed by the other variables you are trying to measure.

An independent variable is also known as input variable.

Or in any experiment, the cause is represented by the independent variable.

Whereas a dependent variable is nothing but the variable that changes as a result of the independent variable. It depends on the independent variable of an experimetent.

It is also called as output variable.

Therefore,   In any experiment, the cause is called the dependent variable, while the effect or result is called the independent variable.

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Then , r ≈ 1.10 inches to the nearest hundredth. So, the radius of the cone is approximately 1.10 inches.

First, let's clarify the correct formula for the volume of a cone, which is V = 1/3 * pi * r^2 * h, where V is the volume, r is the radius, and h is the height.

Given the height (h) of 4 inches and the volume (V) of 13 cubic inches, we can use this formula to find the radius (r). Plugging in the given values, we get:

13 = 1/3 * pi * r^2 * 4

To find the radius, follow these steps:
1. Divide both sides by 4: 13/4 = (1/3 * pi * r^2)
2. Multiply both sides by 3: 39/4 = pi * r^2
3. Divide both sides by pi: (39/4)/pi = r^2
4. Take the square root of both sides: r = sqrt((39/4)/pi)
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a. Quantitative.

b. Categorical.

c. Quantitative.

d. Categorical.

e. Quantitative.

What do you mean by debate ?

Debate is a formal discussion or argument between two or more individuals or groups who present and defend their viewpoints on a particular topic or issue. It is a structured and organized process where participants engage in a back-and-forth exchange of ideas, arguments, and evidence in order to persuade others and establish the strength of their position.

A student willing to participate in a debate competition is required to fill out a registration form.

Form filling in two types of data i.e.,

Quantitative data
Categorical data

Quantitative data :
Quantitative data is data that can be counted or measured in numerical values. The two main types of quantitative data are discrete data and continuous data. Height in feet, age in years, and weight in pounds are examples of quantitative data. Qualitative data is descriptive data that is not expressed numerically.

Categorical data:
Categorical data is a collection of information that is divided into groups. i.e., if an organization or agency is trying to get a biodata of its employees, the resulting data is referred to as categorical.

a. What is your date of birth?

Quantitative.

b. Have you participated in any debate competition previously?

Categorical.

c. If yes, how many debate competitions have you participated so far?

Quantitative.

d. Have you won any of the competitions?

Categorical.

e. If yes, how many have you won?

Quantitative.

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The given question is incomplete, complete question is:

A student willing to participate in a debate competition required to fill a registration form. State

whether each of the following information about the participant provides categorical or quantitative

data.

a. What is your date of birth?

b. Have you participated in any debate competition previously?

c. If yes, how many debate competitions have you participated so far?

d. Have you won any of the competitions?

e. If yes, how many have you won?

Answer:

D.

Step-by-step explanation:

Write slope-intercept in the form y = mx + b. Where m is slope and b is the y-intercept.

Hope it helps!

Answer: x =-2/9

Explanation:

The expression we have is:

Step 1. Multiply both sides by 5/2

this is so that in the left side 5/2 x 2/5 would cancel each other:

Step 2: Solve the multiplication in the right side

As we can see we are left with an expression that can be solved for x.

Step 3: Move all of the terms that contain x to the left side, and all of the numbers to the right side:

Step 4: Combine like terms

Step 5: Divide both sides by -9:

Answer: x =-2/9

The side lengths x and y are √( 50² - y²) and √50² - x² respectively.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

In a right angle triangle, the length of one side can be determined using the Pythagorean theorem:

x² + y² = hypotenuse²

In the given triangle the length of hypotenuse is 50 cm

x² = 50² - y²

x=√( 50² - y²)

y = √50² - x²

Hence, the side lengths x and y are √( 50² - y²) and √50² - x² respectively.

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Jose needs to run at a speed of 5.5 km/h to make it to school before the bell rings.

What is the distance formula?

The distance formula is a mathematical equation used to calculate the distance between two points in a two-dimensional plane or a three-dimensional space.

distance = speed x time

Let's assume that the distance Jose still needs to travel is d. Then, he has 15 minutes or 0.25 hours to cover this distance. So,

d = 5 * 0.25 + v * 0.25

where v is the running speed.

Now, we can calculate the distance d. In the first 30 minutes, Jose covered 5 km * 0.5 hours = 2.5 km. So, he still has 4 km - 2.5 km = 1.5 km to travel.

Substituting the values into the formula, we get:

1.5 = 5 * 0.25 + v * 0.25

Solving for v, we get:

v = (1.5 - 5 * 0.25) / 0.25 = 5.5 km/h

Hence, Jose needs to run at a speed of 5.5 km/h to make it to school before the bell rings.

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Given:

2x + y + z=2 .... (1)

4x +2y +2z=4 .... (2)

-6x -3y -3z =-6.... (3)

Taking Equation (3)

-6x-3y-3z=-6

Divide by -3,

2x+y+z=2 ....(4)

By subracting equation (2) and (4),

0=0

Therefore, the system of equation has infinitely many solution.

Option B is the correct answer.

The critical value of z separates the rejection region from the nonrejection region while observed value of z is the value calculated for a sample statistic such as x.

A critical value of z is used when the sampling distribution is normal, or close to normal. The critical value of z refers to the point that cuts off area under graph for the standard normal distribution separating the rejection and nonrejection region of the data. The Critical value of z can indicate what probability any particular variable will have. These values are typically obtained from a table such as the standard normal distribution table. The observed value of z is a value determined for a sample statistic x. It is a test statistic for Z-tests that measures the difference between an observed statistic and its hypothesized population parameter in units of the standard deviation.

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Answer:

x= -2

Step-by-step explanation:

Simplifying 5x + 45 = 35 Reorder the terms: 45 + 5x = 35 Solving 45 + 5x = 35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 35 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 35 + -45 5x = 35 + -45 Combine like terms: 35 + -45 = -10 5x = -10 Divide each side by '5'. x = -2 Simplifying x = -2

Therefore, the initial number of party favor bags Razi had to fill is 20.

To determine the initial number of party favor bags Razi had to fill, we need to analyze the relationship between the time and the number of bags remaining.

Looking at the table, we can observe that the number of bags remaining decreases by 4 for every additional minute of work. This suggests a constant rate of filling the bags.

From the given data, we can see that at the starting time (4 minutes), Razi had 36 bags remaining. This implies that for each minute of work, 4 bags are filled.

To calculate the initial number of bags, we can subtract the number of bags filled in 4 minutes (4 x 4 = 16) from the number of bags remaining initially (36).

36 - 16 = 20

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Answer:

d) m + s = 20

m = 5

Step-by-step explanation:

m + 3s = 50

m + s = 20

m + 3(20-m) = 50

m + 60 - 3m = 50

60 - 2m = 50

60 = 50 + 2m

60 - 50 = 2m

10 = 2m

5 = m

To compute the directional Gervative of the function f(x,y) = exy - x - 2y at the point P = (2,-1) in the direction of the vector v = , we first need to find the gradient of f at P.

The gradient of f is given by ∇f(x,y) = . So, at the point P = (2,-1), we have ∇f(2,-1) = .

Next, we need to find the unit vector in the direction of v. To do this, we first need to find the magnitude of v, which is ||v|| = √(e^2 + (-2)^2) = √(e^2 + 4).

Then, we can find the unit vector in the direction of v by dividing v by its magnitude:

u = v/||v|| = .

Finally, we can compute the directional Gervative of f at P in the direction of v as follows:

D_v f(2,-1) = ∇f(2,-1) · u = ( · )

= (e^-1 - 1)(e/√(e^2 + 4)) + (e^2 - 2)(-2/√(e^2 + 4))

= -2e/(√(e^2 + 4)) - 4/(√(e^2 + 4))

= (-2e - 4)/(√(e^2 + 4)).

Therefore, the directional Gervative of f at P in the direction of v is (-2e - 4)/(√(e^2 + 4)).

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Answer:

1 cm

Step-by-step explanation:

To solve this problem we can use the Pythagorean theorem. In fact the diagonal of a rectangle is an hypotenuse of a right triangle, while the length is a leg. The width is the other leg

width = √2^2 - (√3)^2 = √4 - 3 = √1 = 1 cm

Shakira will incur overdraft fees for all four transactions, resulting in a total of 4 overdraft fees.

What is Algebraic expression ?

An algebraic expression is a mathematical expression that consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. It represents a mathematical relationship or rule and can be used to represent quantities or quantities that vary. Algebraic expressions are often used to model real-world problems and are a fundamental concept in algebra.

To determine how many overdraft fees Shakira will incur, we need to calculate her remaining balance after deducting all the transactions, and then check if the balance goes below -$50.

Starting balance: $202.86

Transaction 1 (Cell phone bill): -$80.73

Transaction 2 (Dry cleaning): -$16.89

Transaction 3 (Dog food): -$35.24

Transaction 4 (Groceries): -$113.92

Remaining balance: $202.86 - $80.73 - $16.89 - $35.24 - $113.92 = $-44.92

As we can see, the remaining balance after deducting all the transactions is -$44.92, which is below -$50. This means that Shakira's bank will not return any overdraft amounts and will charge her an overdraft fee for each transaction that caused an overdraft.

Therefore, Shakira will incur overdraft fees for all four transactions, resulting in a total of 4 overdraft fees.

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Answer:13.6 units

Step-by-step explanation: its on edge

Answer:

13.6 or b

Step-by-step explanation:

Answer:

In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.

Any number that can be written as a fraction with integers is called a rational number . For example, 17 and −34 are rational numbers

Answer:

C. it cannot be a whole number

Step-by-step explanation:

Answer:

i think B

Step-by-step explanation:

i think B

Answer:

D is one (in my opinion)

Step-by-step explanation:

Only D works, because the two least (smallest) side lengths must exceed the greatest side length in order to actually construct a

To find one machine that does not work, you expected to buy 200 machines on average.

One type of operation in mathematics is division. We divide the phrases or numbers into the same number of components during this operation.

A company named Batco sells batteries.

And Batco claims that  99.5% of their batteries are in working order.

That means, 100 - 99.5 = 0.5% of their machines have defect.

0.5 as a fraction of 100% is 0.005.

To find the one machine that does not work;

Divide 1 by fraction of machines not working,

1 / 0.005

= 200

Therefore, you need to buy 200 machines.

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Answer:

4.393 * 10^6

Step-by-step explanation.

Hello. Oh I've done this problem before.

\(\frac{2.1*10^{19} }{4.78*10^{12} } = 4393305\)

4.393 * 10^6

Hope this helps - please mark brainliest if possible :)

The time that Ron needs to calculate for the sound wave to travel from the earth to Venus, at the speed of 4.78 * 10¹² miles per year, with the distance between them being 2.1 * 10¹⁹ miles, is 4.4*10⁶ years.

The speed of a body is directly related to the distance traveled, while it is inversely related to the time taken.

The equation for speed is written as:

Speed = Distance/Time.

This equation can be used to determine distance and time like this:

Distance = Speed*Time.

Time = Distance/Time.

In the question, we are asked to calculate the time taken for a sound wave at the speed of 4.78 * 10¹² miles per year, to cover the distance between the earth and Venus, where distance = 2.1 * 10¹⁹ miles.

As we already know, the time taken is determined using the formula:

Time = Distance/Speed,

or, time = (2.1 * 10¹⁹ miles)/(4.78 * 10¹² miles per year),

or, time = (2.1/4.78)*10⁷ years = 4.4*10⁶ years.

Therefore, the time that Ron needs to calculate for the sound wave to travel from the earth to Venus, at the speed of 4.78 * 10¹² miles per year, with the distance between them being 2.1 * 10¹⁹ miles, is 4.4*10⁶ years.

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Step-by-step explanation:

2. Commutative Property of Multiplication

3. Associative Property of Multiplication

4/5/6 Distrubtitive Property.

Answer:

B.45

Step-by-step explanation:

60+55=115

180-115=65

65-20=45

Answer: 45°

Answer:

D

Step-by-step explanation: WONDERWALL RULES

Wonderwall

Song by Oasis

Today is gonna be the day

That they're gonna throw it back to you

By now you should've somehow

Realized what you gotta do

I don't believe that anybody

Feels the way I do about you now....Ye i cant type the whole song but i tried!!

I do not believe either of them because of the heights of both the R.F. Mitte Building and the tallest building in San Marcos.

The height that a projectile can reach in ideal conditions (i.e., without air resistance) can be estimated by the physics formula for kinetic and potential energy equivalence:

mgh = 1/2mv²

The R.F. Mitte Building is 100 feet tall, and the tallest building in San Marcos is 150 feet tall. The velocity of a baseball thrown at the top of these buildings would need to be at least 44.27 m/s and 54.22 m/s, respectively, in order for it to reach the top.

This is a very high velocity, and it is unlikely that a person could throw a baseball with that much force. The fastest recorded pitch in Major League Baseball was by Aroldis Chapman at 105.1 mph, which is approximately 47 m/s.

Therefore, while the claim to throw a ball on top of the R.F. Mitte Building might be achievable by a person in excellent physical condition but the claim to throw a baseball on top of the tallest building in San Marcos seems impossible.

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Full question is:

A person claims they can toss a baseball on top of the R.F. Mitte Building. Not to be outdone, his buddy boasts he can throw a baseball on top of the tallest building in San Marcos.

Do you believe either of them and why?

This measure of central tendency can be considered the most precise in option c. mean

The mean is a measure of central tendency that calculates the average of a set of values. It is often considered the most precise measure because it takes into account all the values in the dataset and provides a balanced representation.

The mean is calculated by summing all the values and dividing by the total number of values. Unlike the mode, which only identifies the most frequently occurring value, and the median, which represents the middle value, the mean incorporates all the values and provides a comprehensive summary of the dataset.

However, it is important to note that the mean can be sensitive to extreme values or outliers in the data.

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