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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 effect thickness glass aboev absorption coefficient?

The thickness of glass affects the absorption of light based on its absorption coefficient. A higher absorption coefficient means that light is absorbed more quickly as it passes through the material, leading to greater attenuation with increased thickness. Conversely, if the absorption coefficient is low, the light can penetrate deeper into the glass before being absorbed. Ultimately, thicker glass generally results in greater overall absorption of light, particularly if the absorption coefficient is significant.

How does water slope?

Water slopes due to the influence of gravity, which causes it to flow from higher elevations to lower ones. The gradient of the slope, or the steepness, affects the speed and volume of the water flow. Additionally, natural landforms, such as hills and valleys, guide the direction of water movement. Factors like soil composition and vegetation can also influence how water interacts with the slope.

The average (arithmetic mean) of x and y is 20. If z 5 what is the average of x y and z?

Given that the average of ( x ) and ( y ) is 20, we can express this as ( \frac{x + y}{2} = 20 ), which means ( x + y = 40 ). If ( z = 5 ), then the sum of ( x, y, ) and ( z ) is ( 40 + 5 = 45 ). To find the average of ( x, y, ) and ( z ), we calculate ( \frac{x + y + z}{3} = \frac{45}{3} = 15 ). Thus, the average of ( x, y, ) and ( z ) is 15.

What is at the following coordinates 0 9W?

The coordinates 0° latitude and 9°W longitude are located in the Atlantic Ocean, off the coast of West Africa. This area is situated near the southern part of the Gulf of Guinea and is relatively remote, with no significant landmasses nearby. The closest country is likely Ghana, which is to the east.

How can you write 279 minus 125 in algebraic or numeral expression?

You can write the expression for 279 minus 125 in numeral form as ( 279 - 125 ). In algebraic terms, you can represent it as ( x - y ), where ( x = 279 ) and ( y = 125 ). Both forms convey the same mathematical operation of subtraction.

What are the x- and y- intercepts for the graph of 4x-3y-12?

To find the x-intercept of the equation (4x - 3y - 12 = 0), set (y = 0): (4x - 12 = 0) gives (x = 3). For the y-intercept, set (x = 0): (-3y - 12 = 0) results in (y = -4). Thus, the x-intercept is ( (3, 0) ) and the y-intercept is ( (0, -4) ).

Find the greatest value of x3y4 if 2x plus 3y7 and x0y0?

To maximize ( x^3y^4 ) given the constraint ( 2x + 3y = 7 ) and ( x \geq 0, y \geq 0 ), we can use the method of Lagrange multipliers or substitute ( y ) in terms of ( x ). From the equation, express ( y ) as ( y = \frac{7 - 2x}{3} ). Substituting this into ( x^3y^4 ) will yield a function of ( x ) that can be maximized within the feasible region defined by the constraints. Solving this will give the maximum value of ( x^3y^4 ).

What is the graphed inequality called if the line is undefined?

If the line is undefined in a graphed inequality, it typically represents a vertical line, which corresponds to a vertical inequality such as ( x = a ). In this case, the inequality can be written as ( x < a ) or ( x > a ). The graph will shade to the left or right of the line, indicating the region that satisfies the inequality. Since the line itself is not included in the inequality, it is often represented with a dashed line.

Why did the Banana go out with the prune per algebra worksheet 211?

The banana went out with the prune because it found the prune appealing despite its wrinkled appearance. This playful scenario often illustrates the concept of unexpected pairings or relationships that can arise based on shared interests or characteristics, which can be a fun way to engage students in algebra. Additionally, it highlights the idea that beauty or compatibility isn't solely based on outward appearances.

American school algebra 1 answers?

Algebra 1 typically covers fundamental concepts such as variables, equations, inequalities, functions, and graphing. Students learn to solve linear equations, factor polynomials, and work with rational expressions. Key skills include manipulating algebraic expressions and understanding the properties of operations. For specific answers or problems, it's essential to consult textbooks or educational resources tailored to the curriculum.

What are the benefits of theory x and y?

Theory X and Theory Y, proposed by Douglas McGregor, highlight different management styles and assumptions about employee motivation. Theory X assumes that employees are inherently lazy and require close supervision, leading to a more directive management approach that can ensure productivity in structured environments. Conversely, Theory Y posits that employees are self-motivated and thrive in participative environments, fostering creativity and job satisfaction. The benefits of these theories lie in their ability to help managers understand employee behavior, tailor their leadership styles, and improve organizational effectiveness based on different workforce needs.

How can solve the rubbish problem?

To solve the rubbish problem, we can implement a multi-faceted approach that includes reducing waste at the source, increasing recycling rates, and promoting composting. Educating the public about sustainable practices and encouraging businesses to adopt eco-friendly packaging can significantly reduce the amount of waste generated. Additionally, improving waste management infrastructure and policies, such as incentives for recycling and penalties for littering, can help ensure that waste is handled responsibly. Collaboration between governments, communities, and industries is essential for creating a sustainable waste management system.

X2 equals 169 solve for x by square rooting?

x^(2) = 169

x^(2) - 169 = 0

x^(2) - 13^(2) = 0

Factor

(x - 13)( x + 13) = 0

Hence x = 13 and -13.

Usually shown as x = +/- 13

When factoring squared terms , remeber two squared terms with a NEGATIVE(-) between will factor.

However, two squared terms with a positive (+) between them, does NOT factor.

How do you solve rational expressions?

To solve rational expressions, first, factor both the numerator and the denominator whenever possible. Next, identify any common factors that can be canceled out to simplify the expression. If the expression includes an equation, set the simplified form equal to zero to find the variable's value, and ensure to check for any excluded values that make the denominator zero. Finally, express the solution in its simplest form.

How do you learn square rooting?

Th84.64ree methods;-

  1. use the surd sign on a calculator e.g. (sqrt) / 4 = +/- 2

  2. Use a rather complex arithmetica system of long division.

  3. Use a time consuming but simpler method. e.g. sqrt(90)

To answer

We know sqrt(81) = 9

Sqrt(100) = 10

Since '90' is between 81 and 100 , then the square root is between '9' & '10'

Then by trial and error

9.1^(2) = 82.81 too small

9.2^(2) = 84.64 too small

9.3^(2) = 86.49 too small

9.4^(2) = 88.36 too small

9.5^(2) = 90.25 too big

So we need a decimal number between 9.4 & 9.5 say 9,45

9.45^(2) = 89.3025 too small

9.46^(2) = 89.4916 too small

et. seq.

The acutal value is sqrt(90) = 9.486832981....

In Surd form sqrt(90) = sqrt(10 x 9) = sqrt(10) X sqrt(9) = sqrt(10) x 3

or

3 sqrt(2) sqrt(5)

Since '2' & '5' are prime numbers, their respective square roots are IRRATIONAL numbers.

How do you solve (3x plus 5)2 plus (3x plus 5)218x plus 10(x-2) plus 44?

To solve the expression ((3x + 5)^2 + (3x + 5)218x + 10(x - 2) + 44), first, substitute (y = 3x + 5). This simplifies the expression to (y^2 + 218xy + 10(x - 2) + 44). Then, expand and combine like terms to obtain a polynomial in terms of (x). Finally, you can either factor or use the quadratic formula if needed to find the values of (x).

If you could solve one world problem?

If I could solve one world problem, it would be access to clean water. Ensuring that every person has reliable access to safe drinking water would drastically reduce health issues, improve sanitation, and promote economic development. This solution would also address related problems like poverty, education, and gender inequality, as many people, especially women and children, spend hours each day collecting water. Ultimately, clean water is a fundamental human right that underpins the well-being of individuals and communities globally.

How do you write an algebraic expression for the quotient of 13 and z?

To write an algebraic expression for the quotient of 13 and ( z ), you simply divide 13 by ( z ). This can be expressed as ( \frac{13}{z} ). Alternatively, you could also write it as ( 13 \div z ), but the fraction form is more commonly used in algebra.

What is the multiplicative inverse of negetive7?

The multiplicative inverse of a number is the value that, when multiplied by the original number, results in 1. For negative 7, the multiplicative inverse is -1/7, since (-7 \times -\frac{1}{7} = 1).

What is the verb in a solution to the problem suddenly popped into my head?

The verb in the sentence "A solution to the problem suddenly popped into my head" is "popped." It describes the action of the solution coming to mind unexpectedly. The phrase "suddenly" serves as an adverb modifying the verb, indicating the manner in which the action occurred.

What is the actual size of a 2 x 10?

A nominal 2 x 10 board actually measures 1.5 inches by 9.25 inches in size. This discrepancy is due to the milling process, which reduces the dimensions from the nominal size to the finished size. The nominal dimensions are commonly used in the lumber industry for convenience, but the actual dimensions are important for construction and woodworking projects.

What are actual dimensions of 2 x 4 treated lumber?

The actual dimensions of a 2 x 4 treated lumber are typically 1.5 inches by 3.5 inches. This reduction in size occurs due to the milling process, where lumber is dried and planed to standard dimensions. The treated lumber is infused with preservatives to protect against rot and insects, making it suitable for outdoor use.

What is the function of the quads?

The quadriceps, commonly known as the quads, are a group of four muscles located at the front of the thigh. Their primary function is to extend the knee, which is essential for movements such as walking, running, jumping, and squatting. Additionally, the quads help stabilize the knee joint and support activities that require leg strength and power. Overall, they play a crucial role in lower body mobility and athletic performance.

When a number is added to its additive inverse what is the sum equals to?

When a number is added to its additive inverse, the sum equals zero. The additive inverse of a number ( x ) is ( -x ), so when you calculate ( x + (-x) ), the result is ( 0 ). This property holds true for all real numbers.

What is y equals -3x in slope ntercept form?

The equation ( y = -3x ) is already in slope-intercept form, which is represented as ( y = mx + b ), where ( m ) is the slope and ( b ) is the y-intercept. In this case, the slope ( m ) is -3, indicating that for every one unit increase in ( x ), ( y ) decreases by 3 units. The y-intercept ( b ) is 0, meaning the line crosses the y-axis at the origin (0,0).