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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

When is it easier to solve a quadratic equation by factoring than to solve it using a table?

It is easier to solve a quadratic equation by factoring when the equation can be expressed as a product of two binomials that easily yield integer roots. This method is often quicker for simpler quadratics with small coefficients. In contrast, using a table to find solutions can be more cumbersome and time-consuming, particularly for equations where the roots are not integers or when the quadratic is more complex. Thus, factoring is preferred when the equation allows for straightforward factorization.

What is 12x-5y-20 using the systems of equations with substitution?

To solve the expression (12x - 5y - 20) using systems of equations with substitution, you would first need to have a system of equations that includes variables (x) and (y). You can solve one of the equations for one variable in terms of the other, then substitute that expression into (12x - 5y - 20). After substituting, you can simplify the expression to find its value based on the specific values of (x) and (y) from the original system of equations.

.02 feet equals how many inches?

0.02 ft x 12 inches = 0.24 inches ~ 0.25 inches ( one quarter of an inch).

What is the square root of the fifth root of x?

By 'nesting'

Fifth root of 'x' is x^(1/5)

Then we 'nest' to the square root ( 1/2)

Hence

[x^(1/5]^(1/2) =

x^(1/10) or x^(0.1)

What is the cubed root of x to the fifth?

NB Cube Root can be written as the exponent '1/3'

Hence

[x^(5)]^(1/3) =

x^(5/3)

Factor x5 plus x2?

x^(5) + x^(2)=

x^(2) ))x^(3) + 1)

Think of '1' as '1^(3)'

Hence

x^(2)(x^(3) + 1^(3))

x^(2)(x + 1)(x^(2) - x + 1^(2))

or

x^(2)(x + 1)(x^(2) - x + 1)

Done!!!!!

What expression equals 3(4h plus 2k)?

The expression that equals (3(4h + 2k)) can be simplified by distributing the 3. This results in (3 \times 4h + 3 \times 2k), which simplifies to (12h + 6k). Therefore, the expression is (12h + 6k).

What is the square root of each number 30?

The square root of 30 is approximately 5.477. This value is an irrational number, meaning it cannot be expressed as a simple fraction. For practical purposes, it can be rounded to 5.48 or 5.5, depending on the level of precision required.

Why can you not use the graphical method for every system of equations?

The graphical method cannot be used for every system of equations because it is limited by the number of dimensions we can visually represent. While it's effective for two-variable systems, higher-dimensional systems become difficult or impossible to visualize accurately. Additionally, when dealing with systems that have no solution or infinitely many solutions, the graphical representation may not convey the full nature of the solution set. Lastly, precision in finding exact solutions can be compromised in graphical methods compared to algebraic approaches.

How could you find the y-coordinate of the midpoint of a vertical line segment with endpoints at (0 0) and (0 -12)?

To find the y-coordinate of the midpoint of a vertical line segment with endpoints at (0, 0) and (0, -12), you can use the midpoint formula, which is given by ((y_1 + y_2) / 2). Here, (y_1 = 0) and (y_2 = -12). Plugging in these values, the midpoint's y-coordinate is ((0 + (-12)) / 2 = -12 / 2 = -6). Therefore, the y-coordinate of the midpoint is -6.

What of the binomials below is a factor of this trinomial x2 plus 3x - 4?

To factor the trinomial (x^2 + 3x - 4), we look for two binomials that multiply to give this expression. The factors of (-4) that add up to (3) are (4) and (-1). Therefore, the binomials are ((x + 4)) and ((x - 1)), making ((x - 1)) a factor of the trinomial.

What is the algebraic expression that describes the monthly pay Let x be the hours of training. A. B. C. D.?

To provide an algebraic expression for the monthly pay based on the hours of training (x), I would need more details about the payment structure, such as the pay rate per hour or any additional factors involved. If, for example, the payment is a fixed rate per hour, the expression could be represented as ( \text{Pay} = r \cdot x ), where ( r ) is the hourly rate. Without additional information, I cannot specify the exact expression.

What equation is equivalent to y - 34x(x-12)?

To find an equivalent equation to ( y - 34x(x - 12) ), we can rearrange it as ( y = 34x(x - 12) ). This represents a quadratic equation in terms of ( x ). Expanding it gives ( y = 34x^2 - 408x ), which is another equivalent form of the original expression.

When working with someone in a leadership position to solve a problem you preferred approach has been to?

When working with someone in a leadership position to solve a problem, my preferred approach has been to actively listen to their perspective and insights, ensuring I fully understand their vision and concerns. I then collaborate to brainstorm solutions, leveraging their experience while contributing my own ideas. This partnership fosters open communication and encourages a sense of shared ownership in the outcome, ultimately leading to more effective problem-solving.

What is algebraic terms with the same literal factors?

Algebraic terms with the same literal factors are those that contain identical variable components, although their coefficients may differ. For example, the terms (3x^2) and (5x^2) both have the literal factor (x^2), making them like terms. These terms can be combined through addition or subtraction because they share the same variable part. In contrast, terms like (3x^2) and (4x^3) are not like terms due to differing literal factors.

Find an equation of variation where y varies directly as x and y 8 when x 2 find y when x 10.?

Since ( y ) varies directly as ( x ), we can express this relationship as ( y = kx ), where ( k ) is the constant of variation. Given that ( y = 8 ) when ( x = 2 ), we can find ( k ) as follows: ( 8 = k(2) ) which gives ( k = 4 ). Thus, the equation is ( y = 4x ). To find ( y ) when ( x = 10 ), we substitute ( x ) into the equation: ( y = 4(10) = 40 ).

Which term describes the point where x- and y-axes intersect?

The point where the x- and y-axes intersect is called the "origin." In a Cartesian coordinate system, the origin is represented by the coordinates (0, 0), where both the x-coordinate and y-coordinate are zero. It serves as the reference point for defining all other points in the plane.

What is the simplified form of the quantity of x plus 5 all over the quantity of 9 the quantity of x plus 4 all over the quantity of x plus 6?

To simplify the expression (\frac{x + 5}{9} \div \frac{4}{x + 6}), we can multiply by the reciprocal of the second fraction: (\frac{x + 5}{9} \cdot \frac{x + 6}{4}). This gives us (\frac{(x + 5)(x + 6)}{36}). Thus, the simplified form of the expression is (\frac{(x + 5)(x + 6)}{36}).

Is the function y equals 3x a proportional function?

Yes, the function ( y = 3x ) is a proportional function. It represents a linear relationship where ( y ) is directly proportional to ( x ) with a constant of proportionality equal to 3. This means that for any value of ( x ), ( y ) is simply three times that value, and the graph of the function is a straight line passing through the origin.

What is the answer to y 2.3 10.5?

The expression "y 2.3 10.5" is unclear as it does not specify an operation between the numbers and the variable. If it implies a mathematical operation, please clarify what operation should be performed (e.g., addition, multiplication). If it’s meant to represent an equation or a function involving the variable y, additional context would be needed to provide a specific answer.

What is root 46 squared?

Root 46 squared is simply 46. When you square the square root of a number, you get the original number back, so (√46)² = 46.

What is widal test and it function?

The Widal test is a serological test used to diagnose typhoid fever by detecting antibodies against Salmonella antigens, specifically O and H antigens, in a patient's serum. It helps identify the presence of typhoid fever caused by Salmonella enterica serotype Typhi and Paratyphi. The test is often used in regions where typhoid fever is endemic, but its reliability can be affected by previous infections and vaccinations, leading to false positives or negatives. Therefore, it is typically used in conjunction with clinical symptoms and other diagnostic methods.