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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

What are the rules for factoring?

Factoring involves breaking down an expression into simpler components, known as factors, which when multiplied together yield the original expression. Key rules include identifying common factors, applying the distributive property, recognizing special patterns like the difference of squares, perfect squares, and the sum/difference of cubes. Additionally, for polynomials, one can use techniques like grouping or synthetic division. Always ensure that the factors are expressed in their simplest form.

How can you Write an equation in the form y mx b for the line that has a slope of ¼ and contains the point 12 3?

To write the equation of a line in the form ( y = mx + b ) with a slope of ( \frac{1}{4} ) that passes through the point ( (12, 3) ), start by substituting the slope and the coordinates of the point into the equation. Plugging in ( m = \frac{1}{4} ) and the point ( (12, 3) ):

[ 3 = \frac{1}{4}(12) + b ]

This simplifies to:

[ 3 = 3 + b ]

Solving for ( b ) gives ( b = 0 ). Thus, the equation of the line is:

[ y = \frac{1}{4}x ].

What is the equation of the line that has a slope of 4 5 and a y-intercept of -1?

The equation of a line in slope-intercept form is given by ( y = mx + b ), where ( m ) is the slope and ( b ) is the y-intercept. Given a slope of ( \frac{4}{5} ) and a y-intercept of -1, the equation of the line is ( y = \frac{4}{5}x - 1 ).

What are fimbriane?

Fimbriane are a class of natural organic compounds that belong to the group of terpenes, specifically classified as sesquiterpenes. They are characterized by their unique chemical structures, which typically feature a bicyclic framework. Fimbriane compounds are known for their presence in various plants and have been studied for their potential biological activities, including antimicrobial and anti-inflammatory properties. Their distinctive structures and functions make them of interest in both natural product chemistry and potential therapeutic applications.

What does 4x 2-3x 5-2(x 5)?

To simplify the expression ( 4x + 2 - 3x + 5 - 2(x + 5) ), first distribute the -2 into ( (x + 5) ), resulting in ( -2x - 10 ). The expression then becomes ( 4x + 2 - 3x + 5 - 2x - 10 ). Combining like terms, you have ( (4x - 3x - 2x) + (2 + 5 - 10) = -x - 3 ). Thus, the simplified expression is ( -x - 3 ).

What is the maximum speed for a dual carriageway?

In the UK, the maximum speed limit for cars on a dual carriageway is typically 70 mph (113 km/h). For motorcycles, the limit is the same, while for vans and minibuses, it is also 70 mph, although some larger vehicles may have lower limits. Speed limits can vary by country, so it's important to check local regulations. Always adhere to posted signs, as they may indicate different limits based on specific conditions.

Which formula would you use when you are looking for the slope of a line and give two points of the line?

To find the slope of a line given two points, you can use the formula ( m = \frac{y_2 - y_1}{x_2 - x_1} ), where ( (x_1, y_1) ) and ( (x_2, y_2) ) are the coordinates of the two points. This formula calculates the change in the y-values divided by the change in the x-values, giving you the slope ( m ) of the line.

What is the answer to page 17.13 in Punchline Algebra book b?

I'm sorry, but I cannot access specific pages or content from books, including the Punchline Algebra book. If you can provide the question or problem from that page, I'd be happy to help you solve it or explain the concept!

What is the function of affixes?

Affixes are linguistic elements added to a root word to modify its meaning or grammatical function. They can be prefixes, which precede the root, or suffixes, which follow it, and they often change the word's part of speech, tense, or nuance. For example, adding "un-" to "happy" creates "unhappy," altering its meaning. Overall, affixes help create new words and convey more precise meanings in language.

What is a independent varaible?

An independent variable is a factor or condition in an experiment that is deliberately changed or manipulated to observe its effect on a dependent variable. It is considered the "cause" in a cause-and-effect relationship. In a controlled experiment, researchers adjust the independent variable to determine how it influences outcomes, allowing for insights into the relationships between different variables.

Which pair of points both lie on the that equation s 3x-y equal 2?

To determine which pair of points lies on the equation (3x - y = 2), substitute the coordinates of each point into the equation. For a point ((x, y)) to lie on the line, it must satisfy the equation when the values of (x) and (y) are plugged in. For example, the point ((1, 1)) does not satisfy the equation, but the point ((2, 4)) does, as substituting (x = 2) gives (3(2) - 4 = 2). Thus, you need to check the specific points provided to identify those that satisfy the equation.

Who is Sammy in the book do the math secrets lies and algebra?

In "Do the Math: Secrets, Lies, and Algebra" by Wendy Mass, Sammy is a teenage boy who struggles with the pressures of adolescence and the complexities of family dynamics. He often feels overshadowed by his older brother and grapples with feelings of inadequacy. Throughout the story, Sammy's journey involves navigating friendships, self-discovery, and understanding the importance of honesty in relationships. His character development is central to the book's themes of growth and resilience.

What does domane y?

The term "domane" typically refers to a specific model of road bike produced by Trek, known for its comfort and performance on long-distance rides. The "Y" could refer to a particular variant or feature of this bike model, but without more context, it's unclear what "Y" specifically denotes. Generally, Trek's Domane line is designed with advanced technology for endurance cyclists, including features like IsoSpeed decouplers for improved ride quality.

What is the equation in standard form of a parabola that models the values in the table x-2 0 4 f x -7 3 -73?

To find the equation of a parabola in standard form (y = ax^2 + bx + c) that fits the points given in the table (x: -2, 0, 4 and f(x): -7, 3, -73), we can set up a system of equations using these points. Substituting the values into the equation gives us three equations. Solving this system will yield the coefficients (a), (b), and (c). After solving, the standard form of the parabola can be expressed as (y = -5x^2 - 7x + 3).

How do you solve y-3x 15?

To solve the equation ( y - 3x = 15 ) for ( y ), you need to isolate ( y ). You can do this by adding ( 3x ) to both sides of the equation, resulting in ( y = 3x + 15 ). This expresses ( y ) in terms of ( x ).

In general when solving a radical equation you should first the radical and then square both sides.?

In general, when solving a radical equation, you should first isolate the radical on one side of the equation. Once the radical is isolated, you can then square both sides of the equation to eliminate the radical. After squaring, it’s important to check for extraneous solutions, as squaring both sides can introduce solutions that do not satisfy the original equation.

How many solutions does an equation have if the variable adds out and the final sentence is true?

If an equation simplifies such that the variable cancels out and results in a true statement (like (5 = 5)), it has infinitely many solutions. This is because any value of the variable will satisfy the equation. Conversely, if the simplification leads to a false statement (like (5 = 3)), it has no solutions.

Why does the variable come before the coefficient?

In algebra, the variable comes before the coefficient to clearly indicate that the coefficient is a multiplier of the variable. This arrangement helps to standardize expressions, making them easier to read and understand. For example, in the term "3x," the "3" (coefficient) specifies how many times the variable "x" is counted, establishing a consistent format for mathematical operations and equations.

Why is an elephant big gray and wrinkled pre-algebra?

An elephant is big, gray, and wrinkled due to its evolutionary adaptations. Its large size helps it access food and water sources, while the gray color provides camouflage in its natural habitat. The wrinkles increase the surface area of its skin, which aids in temperature regulation and helps retain moisture. Overall, these characteristics are essential for the elephant's survival in the wild.

What is I squared T?

I squared T (I²T) is a measurement used primarily in electrical engineering to assess the thermal damage potential of electrical currents in conductors. It represents the product of the square of the current (I²) and the time (T) that the current flows, indicating how much heat is generated. This metric is crucial in determining the safe operating limits for electrical devices and preventing overheating or failure. It helps in designing fuses and circuit breakers to ensure safety in electrical systems.

What is the sin theta of 45 degrees?

The sine of 45 degrees is equal to (\frac{\sqrt{2}}{2}). This value arises from the properties of a 45-45-90 triangle, where both legs are equal and the hypotenuse is (\sqrt{2}) times the length of each leg. Consequently, the sine function, which is defined as the ratio of the opposite side to the hypotenuse, yields this result for 45 degrees.

How are perfect squares used in geometry?

Perfect squares are used in geometry to determine the area of squares and other shapes. For instance, the area of a square is calculated by squaring the length of one of its sides, which is a perfect square. Additionally, perfect squares can be useful in the Pythagorean theorem, where they represent the squares of the lengths of the sides of right triangles. This helps in various applications, including construction, design, and spatial reasoning.

What is a mathematical sentence that contain an equals sign that shows that two expressions are equivalent?

A mathematical sentence that shows two expressions are equivalent is an equation, such as (5x + 3 = 18). This sentence states that the expression (5x + 3) is equal to the expression (18) for certain values of (x). Additionally, another example could be (2(a + b) = 2a + 2b), demonstrating that both sides represent the same value when simplified.

How do you Find side c if side a equals 4 and side b equals 7?

To find side ( c ) in a right triangle where side ( a ) equals 4 and side ( b ) equals 7, you can use the Pythagorean theorem, which states ( c^2 = a^2 + b^2 ). Plugging in the values, you get ( c^2 = 4^2 + 7^2 = 16 + 49 = 65 ). Taking the square root, ( c = \sqrt{65} ), which is approximately 8.06.

How do you obtain and interpret drawings charts specifications manufacturers manuals history maintenance reports and other documents needed in the problem solving process?

To obtain and interpret drawings, charts, specifications, manufacturers' manuals, and maintenance reports, one should first identify the specific documents relevant to the issue at hand. This can be done through online databases, manufacturer websites, or company archives. Once acquired, carefully review these documents for key details such as operational guidelines, troubleshooting steps, and historical maintenance data, which provide context for understanding the problem. Analyzing this information helps in diagnosing issues and informing effective solutions.