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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 does the term roots mean in a quadratic function?

In a quadratic function, the term "roots" refers to the values of the variable (typically (x)) that make the function equal to zero. These roots can be found by solving the quadratic equation (ax^2 + bx + c = 0). They represent the points where the graph of the quadratic intersects the x-axis. The roots can be real or complex, depending on the discriminant ((b^2 - 4ac)) of the equation.

What are the solutions of 2x2 8x -26?

To solve the quadratic equation (2x^2 + 8x - 26 = 0), we can first simplify it by dividing all terms by 2, resulting in (x^2 + 4x - 13 = 0). Next, we apply the quadratic formula (x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}), where (a = 1), (b = 4), and (c = -13). This yields (x = \frac{-4 \pm \sqrt{16 + 52}}{2} = \frac{-4 \pm \sqrt{68}}{2} = \frac{-4 \pm 2\sqrt{17}}{2}), which simplifies to (x = -2 \pm \sqrt{17}). Thus, the solutions are (x = -2 + \sqrt{17}) and (x = -2 - \sqrt{17}).

How you calculate texture coefficient?

The texture coefficient (TC) is calculated using the formula: TC = (Imax - Imin) / Iavg, where Imax is the maximum intensity of the texture feature, Imin is the minimum intensity, and Iavg is the average intensity of the texture. This coefficient quantifies the degree of texture variation within a region, with higher values indicating greater texture contrast. To compute TC, first gather the intensity values of the pixels in the texture region, then apply the formula to obtain the coefficient.

What does x intercept mean in math?

The x-intercept in math refers to the point where a graph intersects the x-axis. At this point, the value of the dependent variable (usually y) is zero. To find the x-intercept of an equation, you set y to zero and solve for x. This point can provide valuable information about the behavior of the function represented by the graph.

What is the proof line current is equal to square root of 3 times of phase currents?

In a three-phase system, the line current (I_L) and phase current (I_Ph) relationship can be derived from the configuration of the system. For a balanced load in a star (Y) connection, the line current is equal to the phase current (I_L = I_Ph). In a delta (Δ) connection, the line current is equal to the phase current multiplied by the square root of 3 (I_L = √3 * I_Ph) due to the geometry of the connections and the phase angle relationships, resulting in the factor of √3 that arises from the 120-degree phase shifts between the currents. Thus, for a delta connection, the line current is greater than the phase current by that factor.

What is the function of a sarcomere?

A sarcomere is the basic structural and functional unit of muscle tissue, specifically in striated muscles like skeletal and cardiac muscle. It is responsible for muscle contraction through the interaction of actin and myosin filaments, which slide past each other during contraction. This sliding mechanism shortens the sarcomere, leading to overall muscle shortening and generation of force. Sarcomeres are organized in a repeating pattern along myofibrils, contributing to the striated appearance of these muscles.

What is the y intercept of the lines 5x-4y-12?

To find the y-intercept of the line represented by the equation (5x - 4y - 12 = 0), set (x = 0). Substituting (x = 0) gives (-4y - 12 = 0), which simplifies to (-4y = 12) or (y = -3). Therefore, the y-intercept is ((0, -3)).

What is the property of 1x4?

The property of (1 \times 4) is that it equals 4. This demonstrates the basic principle of multiplication, where any number multiplied by 1 remains unchanged. In this case, multiplying 1 by 4 simply results in 4. Thus, (1 \times 4 = 4).

What are examples of trinomials?

Trinomials are algebraic expressions that consist of three terms. Examples include (x^2 + 3x + 2), which is a quadratic trinomial, and (2a^3 - 3a^2 + 5), which is a polynomial trinomial. Another example is (4x^2y + 7xy^2 - 3y), which combines variables in its terms. These expressions can be used in various mathematical contexts, including factoring and solving equations.

What is function of TEM?

Transmission Electron Microscopy (TEM) is a powerful imaging technique used to analyze the microstructure of materials at atomic resolution. It functions by transmitting a beam of electrons through a thin specimen, allowing for the observation of internal structures, defects, and variations in composition. TEM provides detailed information about crystal structures, grain boundaries, and phase distributions, making it invaluable in fields such as materials science, biology, and nanotechnology. Additionally, it can be coupled with various spectroscopy techniques for elemental analysis.

What is the value of x if 2x plus 5 equals 10?

To find the value of x in the equation (2x + 5 = 10), first subtract 5 from both sides: (2x = 5). Next, divide both sides by 2: (x = \frac{5}{2}) or (x = 2.5). Thus, the value of x is 2.5.

What would be the most logical first step for solving this quadratic equation x2 plus 2x plus 13 -8?

The first step in solving the quadratic equation ( x^2 + 2x + 13 - 8 = 0 ) is to simplify the equation. Combine the constant terms to get ( x^2 + 2x + 5 = 0 ). Then, you can proceed to solve for ( x ) using either factoring (if applicable), completing the square, or applying the quadratic formula.

What is the intersection of the vertical and horizontal lines in a coordinate plane called?

The intersection of the vertical and horizontal lines in a coordinate plane is called the origin. This point is represented by the coordinates (0, 0), where the x-axis (horizontal line) and y-axis (vertical line) intersect. It serves as the reference point for the Cartesian coordinate system.

What problems did the M40 Gas Mask solve on the earth?

The M40 Gas Mask was designed to protect military personnel from chemical, biological, radiological, and nuclear (CBRN) threats on the battlefield. It addressed the critical need for effective respiratory protection against toxic agents, enhancing soldiers' survivability and operational effectiveness. Additionally, the mask improved visibility and communication capabilities compared to earlier models, ensuring that troops could function more effectively in hazardous environments. Overall, it contributed to increased safety and effectiveness in military operations.

When dividing powers with the same base you do what?

When dividing powers with the same base, you subtract the exponents. The formula is (a^m \div a^n = a^{m-n}), where (a) is the base and (m) and (n) are the exponents. This simplification follows from the properties of exponents.

What is x in -6x 4 2?

It seems like there might be a typo or missing operators in the expression "-6x 4 2." If you meant to write an equation, please clarify the operators (e.g., addition, subtraction, multiplication, or division) so I can help you solve for x.

What is 2x5 3x2 4?

To solve the expression (2 \times 5 + 3 \times 2 + 4), first calculate each multiplication: (2 \times 5 = 10) and (3 \times 2 = 6). Then, add the results along with 4: (10 + 6 + 4 = 20). Therefore, the final answer is 20.

Is the square root of 2 an integer?

No, the square root of 2 is not an integer. It is an irrational number, which means it cannot be expressed as a fraction of two integers. Its decimal representation is approximately 1.414, and it continues infinitely without repeating.

What is the coeficient of 3xy?

The coefficient of the term (3xy) is the numerical factor multiplying the variables, which is (3). In algebra, the coefficient indicates how many times the variable is multiplied by that number. Therefore, in this case, the coefficient of (3xy) is simply (3).

What is the solution to 5x 2 x-4x?

To solve the expression (5x^2 - 4x), you can factor it. First, you can factor out the common term (x): (x(5x - 4)). This expression represents a quadratic polynomial, and the solutions for (x) can be found by setting (5x - 4 = 0), giving (x = \frac{4}{5}) as one solution, while (x = 0) is another.

Is the square root of 306 rational or irrational?

The square root of 306 is irrational. This is because 306 is not a perfect square, meaning it cannot be expressed as the ratio of two integers. When calculated, the square root of 306 is approximately 17.49, which cannot be simplified to a fraction.

What is linear equations 127 47 8x?

A linear equation is an algebraic expression that represents a straight line when graphed on a coordinate plane. The equation you provided, "8x," can be interpreted as a linear equation of the form (y = 8x), where the slope is 8 and there is no constant term, making it pass through the origin. The numbers "127" and "47" do not fit into this context without additional information or a specific equation structure.

What is 3 2(5x 6) how do you divide that into 5 equal groups?

To solve the expression (3 + 2(5 \times 6)), first calculate (5 \times 6), which equals 30, then multiply by 2 to get 60. Adding 3 gives (3 + 60 = 63). To divide 63 into 5 equal groups, simply divide 63 by 5, resulting in (12.6) for each group.

How do you find the x-intercept of a logarithmic function?

To find the x-intercept of a logarithmic function, set the function equal to zero and solve for x. For example, if you have a function (f(x) = \log_b(x)), set ( \log_b(x) = 0). This implies that (x = b^0), which simplifies to (x = 1). Thus, the x-intercept for this function is at the point (1, 0).

What is the answer to pre alg caching box 5?

I'm sorry, but I don't have access to specific educational materials or exercises, including "pre alg caching box 5." If you can provide more context or details about the problem, I'd be happy to help you understand the concept or solve a similar problem!