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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

How do you represent the square root of 1?

Square root ( 1) = +/-1

Remember

-1 X -1 = (+)1

+1 x +1 = (+)1

So the square root of (+)1 can be either (+)1 or (-)1

However, do NOT confuse with the 'square root (-1)' . Mathematicians for centuries have been pondering over this problem, and still no answer!!!!!

What is the equation of the parabola with focus (1 3) and vertex at (3 3)?

The equation of a parabola can be determined using its focus and vertex. Given the focus at (1, 3) and the vertex at (3, 3), the parabola opens horizontally since the x-coordinate of the focus is less than that of the vertex. The standard form for a horizontally opening parabola is ((y - k)^2 = 4p(x - h)), where (h, k) is the vertex and p is the distance from the vertex to the focus. Here, (p = -2) (the focus is 2 units left of the vertex), so the equation is ((y - 3)^2 = -8(x - 3)).

Is a only a constant polynomial?

A constant polynomial is a polynomial of degree zero, which means it can be expressed in the form ( f(x) = c ), where ( c ) is a constant (a real or complex number). It does not depend on the variable ( x ) and remains the same for all values of ( x ). While it is a polynomial, it is not the only type; polynomials can also have higher degrees with varying coefficients for the ( x ) terms. Thus, a constant polynomial is a specific case within the broader category of polynomials.

What is the difference between 2 4 time signature dance step and 3 4 time signature dance step?

The primary difference between 2/4 and 3/4 time signature dance steps lies in their rhythmic structure. In 2/4 time, there are two beats per measure, usually emphasizing a strong-weak pattern, which often lends itself to lively, quick-paced dances like polkas. In contrast, 3/4 time features three beats per measure, creating a strong-weak-weak pattern, commonly associated with waltzes and giving it a more flowing, circular movement. This distinction affects the styling and feel of the dance steps in each time signature.

What is a function of a chroloplast?

Chloroplasts are organelles found in plant cells and some algae that are responsible for photosynthesis. They convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water. This process also produces oxygen as a byproduct. Additionally, chloroplasts contain chlorophyll, the green pigment that captures light energy.

Is y2 a function?

To determine if ( y^2 ) is a function, we need to consider the relationship between ( y ) and ( x ). If ( y^2 ) is defined as a function of ( x ), such as ( y^2 = f(x) ), then it can be a function, provided that for each ( x ) there is a unique ( y ) value. However, since ( y^2 ) can yield two possible values for ( y ) (positive and negative) for most ( x ) values, it typically does not satisfy the definition of a function unless further constraints are applied. Therefore, ( y^2 ) alone does not represent a function.

Multiplying by a number flips the graph of a function over the x-axis.?

Multiplying a function by a negative number reflects its graph over the x-axis. This means that for every point (x, y) on the original graph, the transformed point will be (x, -y). If the multiplication factor is positive, the graph retains its orientation but may stretch or compress vertically, depending on the factor's absolute value. Thus, the reflection occurs specifically with negative multiplication.

How many meters is 276 inches?

First of all the metric equivalent of 1 inch is 2.54 cm.

So multiply 276 inches x 2.54 cm = 701.94 cm

There are 100 cm = 1 metre.

So divide by '100'

701.84 / 100 = 7.0194 m ( metres).

What is the function of gastin?

Gastrin is a hormone produced by the G-cells in the stomach lining. Its primary function is to stimulate the secretion of gastric acid (hydrochloric acid) from the parietal cells in the stomach, which aids in digestion. Gastrin also promotes gastric motility and helps regulate the growth of the gastric mucosa. Overall, it plays a crucial role in the digestive process by enhancing the acidity of the stomach contents.

Is 74 an even number?

YES!!!!

Any number , however, large or small, that ends in 0,2,4,6, or 8 is an EVEN Number. 100000000000000000000000 is an even number.

Odd numbers ends in 1,3,5,7, or 9. e.g. 1000000000000000000000001 is an ODD Number.

How do you solve 18-(3x 5)5 (x-1)-6?

To solve the expression ( 18 - (3 \times 5)5 (x - 1) - 6 ), start by simplifying the multiplication: ( 3 \times 5 = 15 ), so the expression becomes ( 18 - 15 \cdot 5 (x - 1) - 6 ). Next, calculate ( 15 \cdot 5 = 75 ), which gives you ( 18 - 75(x - 1) - 6 ). Finally, combine the constant terms: ( 18 - 6 = 12 ), resulting in ( 12 - 75(x - 1) ).

What phase of DMAIC shows your solutions solve the problem?

The "Control" phase of DMAIC (Define, Measure, Analyze, Improve, Control) demonstrates that the solutions effectively solve the problem. In this phase, the improvements are monitored and controlled to ensure that the gains are sustained over time. It involves implementing control systems, such as process monitoring and standard operating procedures, to maintain the improvements and verify that the problem has been resolved.

Why does minus 2 x minus 2 equal 4?

Because you are multiplying a negative & A negative. You can fully understand by closing eyes & reopening them. + will mean positive & - will mean negative. ++: Keep your eyes open, then keep your eyes open again. The eyes will be open. So ++=+. +-: Keep your eyes open, then close your eyes. Your eyes will be closed, so +-=-. --: close your eyes, open your eyes. Your eyes will be open so --=+. Think of -2 * -2 as 2 * 2. You know 22=4. So -2-2=4.

Why is there no solution to the square root of -169?

The answer is an imaginary number, because of the negative under the square root. The same number multiplied together will always be a positive number. For example, if you square negative one, the answer is positive one, because a negative times a negative is a positive. Because a square root undoes a square, there is no solution to the square root of a negative number. That's why your calculator could not compute this problem.

However, there is a way to solve these types of problems by using imaginary numbers. The answer is 13i, where i is the square root of negative one.

Are vertical angles a linear pair?

No, vertical angles are not a linear pair. Vertical angles are formed when two lines intersect, creating pairs of opposite angles that are equal in measure. A linear pair consists of two adjacent angles that sum to 180 degrees and share a common side. While vertical angles may be supplementary to other angles, they are not adjacent and do not form a linear pair.

Formula for finding the hypotenuse of a triangle?

Two methods ;-

#1 ; Use Pythagoras, if the lengths of the other two sides are known.

h^(2) = s(1)&(2) + s(2)^(2)

In words, 'The hypotenuse squared is the sum of the squares of the other two sides.

#2 ; Use Trigonometry (trig.) is the length of one side and an angle are known .

Hence

Sin(angle) = opposite / hypotenuse

hypotenuse = opposite / Sin(angle)

or

Cos(angle) = adjacent/hypotenuse

hypotenuse = adjacent/Cos(angle).

How many combinations of 4 numbers in 1 to Y?

The number of combinations of 4 numbers chosen from a set of numbers ranging from 1 to Y is given by the combination formula ( C(n, k) = \frac{n!}{k!(n-k)!} ), where ( n ) is the total number of items to choose from (in this case, Y) and ( k ) is the number of items to choose (4). Thus, the number of combinations is ( C(Y, 4) = \frac{Y!}{4!(Y-4)!} ). This formula is valid when ( Y ) is at least 4; otherwise, the number of combinations is zero.

How do you factorise x squared minus 49?

To factorize ( x^2 - 49 ), you can recognize it as a difference of squares. It can be expressed as ( (x - 7)(x + 7) ), since ( 49 ) is ( 7^2 ). Therefore, the complete factorization is ( (x - 7)(x + 7) ).

What is a resograph and the function of the resograph?

A resograph is a type of printing machine that uses a stencil-based process, similar to risograph printing, to produce high-quality, vibrant prints. It combines digital printing technology with the efficiency of screen printing, allowing for quick, cost-effective reproduction of images and text. The resograph is often used for creating art prints, zines, and other materials where bold colors and unique textures are desired. Its eco-friendly ink and low energy consumption make it a popular choice for artists and small publishers.

Does 2a plus 2 have similar terms?

Yes, (2a) and (2) do not have similar terms because they involve different variables. Similar terms must have the same variable raised to the same power. In this case, (2a) is a term with the variable (a), while (2) is a constant without any variable.

How are points platted on the coordinate system?

Points are plotted on a coordinate system using ordered pairs, typically in the format (x, y) for a two-dimensional Cartesian plane. The x-coordinate indicates the horizontal position from the origin, while the y-coordinate indicates the vertical position. To plot a point, start at the origin (0, 0), move along the x-axis to the x-value, and then move vertically to the y-value. This intersection of the two movements marks the location of the point on the grid.

How sin90degree equals 1?

Sin(Sine) is a cyclic curve.

This cyclic curve(wave) that repeats every 360 degrees ( or 2pi radian).

Its Amplitude ranges from (+)1 to (-)1

When learning about trigonometry(Trig.) you only learn the bit between 0 degrees and 90 degrees.

On extending this learning you will find it to be a cyclic curve.

The word 'Sine'(Sin) is from Latin and means 'curve'.

The word 'Cosine(Cos) means 'complimentary sine' . It is the same curve as Sine but shifted along the x-axis by 90 degrees.

What were some similarities between our current number system and the Egyptian number system?

Both systems use base-ten, symbols to represent quantities, addition-based grouping, and visual signs for numbers, helping record counts, trade, measurements, and basic calculations in daily life. We have Preschool Near Melakottaiyur provides a safe, hygienic, and nurturing environment where children can learn, play, rest, and grow under the supervision of trained caregivers.

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