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Algebra

The use of letters to substitute unknown numbers to form an equation. Solve the equation to get the unknown number using different methods such as simultaneous equations and more.

227,579 Questions

Why does changing an expression on one side of an equation to an equivalent expression leave the solution set unchanged?

Changing an expression on one side of an equation to an equivalent expression maintains the equality because both expressions represent the same value. As long as the transformation adheres to the properties of equality (such as adding, subtracting, multiplying, or dividing by the same non-zero number), the relationship between the two sides of the equation remains intact. Therefore, the solution set, which satisfies the equation, stays unchanged. This principle is fundamental in algebra and ensures that manipulations lead to equivalent equations.

What is the variable expression to represent the number of inches in x feet?

To represent the number of inches in ( x ) feet, you can use the variable expression ( 12x ). This is because there are 12 inches in one foot, so multiplying the number of feet ( x ) by 12 gives the total inches. Therefore, the expression ( 12x ) accurately represents the number of inches in ( x ) feet.

What is the function of a transmissometer?

A transmissometer is an instrument used to measure the transmission of light through a medium, typically the atmosphere. It quantifies the amount of light that passes through a specific distance, which helps in assessing visibility conditions and atmospheric clarity. The data collected can be crucial for applications in meteorology, aviation, and environmental monitoring. By determining how much light is absorbed or scattered, transmissometers provide insights into air quality and the presence of particulates or pollutants.

What are the Answers for 224 a plus notes for beginning algebra?

I'm sorry, but I can't provide specific answers for textbooks or assignments, including "224 A Plus Notes for Beginning Algebra." However, I can help explain concepts or solve similar problems if you'd like!

What is the sum and difference of binomial?

The sum of two binomials is obtained by adding their corresponding terms, resulting in a new binomial that combines the like terms. For example, the sum of ( (a + b) ) and ( (c + d) ) is ( (a + b + c + d) ). The difference of two binomials is found by subtracting the corresponding terms, leading to a new binomial as well; for instance, the difference of ( (a + b) ) and ( (c + d) ) is ( (a + b - c - d) ). In both cases, the final expression may be simplified if there are like terms.

How do you draw a line of best fit on a TI-83 plus?

To draw a line of best fit on a TI-83 Plus, first enter your data into a list by pressing the STAT button, selecting 1:Edit, and inputting your x-values and y-values in separate columns. Next, press STAT, scroll to CALC, and select 4:LinReg(ax+b) to compute the line of best fit. After running the regression, you can graph it by pressing Y= and entering the equation generated by the LinReg function. Finally, press GRAPH to display the line along with your data points.

What is the importance of curiosity in decision making and problem solving?

Curiosity plays a crucial role in decision making and problem solving by encouraging individuals to explore diverse perspectives and seek out new information. This inquisitive mindset fosters creativity and innovation, enabling better solutions to emerge. Additionally, curiosity helps in questioning assumptions and biases, leading to more informed and effective decisions. Ultimately, it drives a deeper understanding of complex issues, enhancing overall problem-solving capabilities.

What two whole numbers are closest to the square root o 162?

The square root of 162 is approximately 12.727. Therefore, the two whole numbers closest to the square root of 162 are 12 and 13.

What is the meaning of the y-intercept in slope?

The y-intercept in the context of a slope refers to the point where a line crosses the y-axis on a graph. It represents the value of the dependent variable when the independent variable is zero. In a linear equation, the y-intercept provides insight into the starting value of the relationship being analyzed before any changes in the independent variable occur.

What are the different on sets?

In set theory, sets can differ in several ways, such as their elements, size, and properties. Sets can be finite or infinite, and they can be categorized as subsets, supersets, or disjoint sets based on their relationships with other sets. Additionally, sets may have different operations applied to them, such as union, intersection, and difference, which can yield new sets with distinct characteristics. Overall, the differences among sets are defined by their contents and the mathematical operations that can be performed on them.

What is example rational in math algebra?

In algebra, a rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero. For example, the number ( \frac{3}{4} ) is rational because it can be formed by dividing the integer 3 by the integer 4. Similarly, the integer 2 can also be considered rational since it can be expressed as ( \frac{2}{1} ). In contrast, numbers like ( \sqrt{2} ) or ( \pi ) are not rational because they cannot be represented as a fraction of integers.

How much time does it take for a bird flying at a speed of 45 miles per hour to travel a distance?

To determine the time it takes for a bird flying at a speed of 45 miles per hour to travel a certain distance, you can use the formula: time = distance/speed. For instance, if the bird is traveling 90 miles, it would take 2 hours (90 miles ÷ 45 miles per hour). Adjust the distance in the formula to find the time for different distances.

What is the function of gibberlin describe?

Gibberellins are a class of plant hormones that play a crucial role in regulating various growth processes. They promote stem elongation, seed germination, and flowering, as well as the development of fruits. By influencing cell division and elongation, gibberellins help plants adapt to their environment and optimize their growth. Additionally, they are involved in breaking dormancy in seeds and buds, facilitating the transition to active growth.

What is a carboydrate function?

Carbohydrates serve several essential functions in living organisms. Primarily, they are a key source of energy, providing fuel for cellular processes. They also play a critical role in structural components, such as in cell walls of plants (cellulose) and in the formation of exoskeletons in some animals (chitin). Additionally, carbohydrates are involved in cell recognition and signaling processes, contributing to the functioning of the immune system and cell communication.

What is -10 plus 7x plus 4x equals 78?

-10 + 7x + 4x = 78

Collect like terms

-10 + 11x = 78

Add '10' to both sides

11x = 88

Divide both sides by '11'

11x/11 = 88/11

x = 8 The answer!!!!!

What is x in this equation x plus 7x - 2 plus x plus 7x -2 equals 60?

7x - 2 = 60

Add '2' to both sides

7x = 62

Divide both sides by; ;7; #

7x/7 = 62/7

x = 8 6/7 = 857142.....

What is the slop intercept for 6x 5y5?

'Slop' you are being very 'sloppy' with your English spelling. The word is 'Slope'. Note the mute 'e'.

6x + 5y = 5

To find the slope/intercept we algebraically rearrange.

The general slope/intercept equation is of the form ' y = mx + c '.

Where 'm' is the slope, and 'c' in the intercept on the y-axis'.

Hence

6x + 5y = 5 =>

5y = -6x + 5 (Note the change of sign to (-).

y = (-6/5)x + 5/5

y = (-6/5)x + 1

So the slope is ' -6/5' or ' -1 1/5 ' or '1.2'.

The intercept on the y-axis is y = 1.

What does 6x mean?

6x means ' '6' multiplied(times) to the unknown 'x'.

In stead of writing ' x + x + x + x +x + x = 6x we say 6 multiplied to 'x'.

In number.

3 X 4 = 12

Instead of 4 + 4 + 4 = 12

or 3 + 3 + 3 + 3 = 12

You are doing exactly the same in algebra , with an unknown but fixed value.

What does the number 8563 mean?

It means the number is 8,563.

In words ' Eight thousand, five hundred and sixty three' .

What is the derivative of 2x-squared plus 4x plus 8?

y = 2x^(2) + 4x + 8

dy.dx = 2(2)x^(2-1) + 4x^(1-1) +8x^(0)

dy/dc = 2(2)x^(1) + (1)4x^(0) + (0)8x^(0-1)

dy/dx = 4x + 4 + 0

dy/dx = 4x + 4 *The derivative).

NB

#1 The original index number becomes a coefficient ( in brackets). Then subtract '1' from the original index value, for the new index value.

#2 Any term raised to the power of '0' = 1.

#3 Any term multiplied by '0' = 0.

What is the price of a certain type of wine depends on its age described by the function price(age) what can be said about this function check all that apply.?

The function price(age) likely represents a relationship where the price of the wine increases as its age increases, reflecting the common perception that older wines are often more valuable. This function is typically expected to be non-decreasing, meaning it does not decrease as age increases. Additionally, it may exhibit diminishing returns, where each additional year of aging contributes less to the price increase than the previous year. The specific behavior of the function would depend on the type of wine and market conditions.

How big is 40cm squared?

40 cm squared (40 cm²) refers to an area measurement, not a linear dimension. It represents a square that measures 6.32 cm on each side, as the area of a square is calculated by squaring the length of one of its sides (side²). Therefore, 40 cm² indicates a relatively small area, roughly equivalent to a piece of paper or a small notebook.

What kind of mathematical sentence express at least and at most questions about linear functions?

At least and at most questions about linear functions can be expressed using inequalities. For example, if a linear function is represented as ( f(x) = mx + b ), an "at least" question can be framed as ( f(x) \geq c ), indicating that the function's output is greater than or equal to a certain value ( c ). Conversely, an "at most" question can be expressed as ( f(x) \leq d ), signifying that the function's output does not exceed a specific value ( d ). These inequalities help define the range of values that the linear function can take.

What are the number of cross points needed for 10 lines in a cross point switch which is full duplex in nature and with no self connections?

What are the number of cross points needed for 10 lines in a cross point switch which is full duplex in nature and with no self connections? Write your answer...