SEMATHS.ORG

# Popular questions

#### Why is the acceleration due to gravity the same for all objects

As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth's sur...

#### What is 250 as a decimal

250% = 2.5 in decimal form....

#### For what numbers is tan not defined

F(theta) = Tan Theta Is Not Defined For Numbers That Are Of Pi/2 (90 Degree)....

#### How do you calculate the change in free energy for a reaction under nonstandard conditions?

The free energy at nonstandard conditions can be determined using ΔG = ΔG⁰ + RT ln Q....

#### What is concave up

Concave Up, Concave Down, Points of Inflection. A graph is said to be concave up at a point if the tangent line to the graph at ...

#### What does e mean in algebra

The number e , sometimes called the natural number, or Euler's number, is an important mathematical constant approximately equal to 2.71828. Wh...

#### How to find probability in normal distribution

Follow these steps:Draw a picture of the normal distribution.Translate the problem into one of the following: p(X < a),...

#### How many pennies does it take to make a dollar

There are 100 pennies in a US dollar. A penny is equal to one cent and is composed mostly of zinc and copper....

#### What is the lcm of 3 4 and 9

Answer: LCM of 3, 4, and 9 is 36....

#### How are mass and weight the same

Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on that object. Your mass<...

#### What does scalene mean in math

of a triangle. : having the three sides of unequal length - see triangle illustration....

#### What is the average rainfall in houston texas

16.07 inches on August 27, 20172021JanYearRain Totals (in) (departure from normal)<...

#### What size is a half sheet of paper

140 × 216 mm Half Letter is part of the North American loose paper size series. It measures 140 × 216 mm or 5.5 × 8.5 inches. ...

#### What shape has one side

Congratulations, you are now the proud owner of what mathematicians call a Möbius strip (pronounced moe-be-us) – first discovered by the Ger...

#### How to add and subtract improper fractions

Note: The rules for adding and subtracting improper fractions are the same as working with proper fractions. Step 1: Keep the denominato...

#### What does the word median mean in math

The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than ...

#### What does slant stand for

“SLANT” is an acronym that stands for 'Sit up, Lean forward, Ask and answers questions, Nod your head and Talk Talk Talk or Track th...

Eye test how many pencils are there answer In case you have managed to get the numbers, here is the right answer: There are 18 pencils which ha...

#### What is the gcf of 24 and 30

The GCF of 24 and 30 is 6....

#### What is a mathematical language of symbols including variables

Answer: algebra. A mathematical language of symbols including variables....

#### What is the difference between scalar and vector

Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully describ...

In mathematics, the word sign refers to the property of being positive or negative. Every real number that is non-zero is either positiv...

#### What is ln in maths

ln is the natural logarithm. It is log to the base of e. e is an irrational and transcendental number the first few digit of which are: ...

#### How many covalent bonds does sulfur have

Sulfur is a nonmetal in group 6A , and therefore has 6 valence electrons. In order to obey the octet rule, it needs to gain 2 electrons . It can do th...

#### What shape has 10 sides called

Answer (1 of 25): A ten sided object (polyhedron) is known as a decahedron (three dimensional) while a ten sided two dimensional figure (polygon) is k...

#### Use the discriminant to find what type of solutions the equation has

Use the discriminant to determine if a quadratic equation has two real solutions, one real solution, or two complex ...

#### How many combinations with 5 numbers with repetition

The smallest is 21345, the largest is 25431 and again there are 24 possibilities. Repeat this process again with 3 as the first digit, then 4 as the f...

#### A duplicated chromosome has how many chromatids

CHROMOSOMAL STRUCTURE A chromatid is a condensed DNA subunit of a chromosome. The two chromatids of a duplicated chromosome are held together a...

#### What is the straight line symbol called

The vertical bar, |, is a glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular mea...

#### How many hydrogen atoms are in 1 mole

The definition of Avogadro's number of 6.022 × 1023/mole is the number of atoms or molecules per one gram atomic weight. For one gram atomic weig...

#### What would today be without leap year

If you suggest that the Julian calendar reforms would have introduced the 365 day-year, in 45 B.C. as it actually did, but with no leap days at...

#### What is the least common multiple of 5 and 15

Answer: LCM of 5 and 15 is 15....

#### What shape has 6 faces and 6 angles

In geometry, a hexagon (from Greek ἕξ, hex, meaning "six", and γωνία, gonía, meaning "corner, angle") is a six-sided polygon or...

#### How are the two angles related

Two adjacent angles form a linear pair of angles if their non-common arms are two opposite rays, i.e., the sum of two

#### How to make a 30 degree angle with a ruler

A 30° angle is half of a 60° angle. So, to draw a 30° , construct a 60° angle and then bisect it....

#### If the discriminant is negative how many roots are there

That's negative, so there are two complex roots for this equation....

#### Why do flying bees buzz

Starting with the basics… all bees buzz when they fly. The buzzing sound we hear is because bees can flap their wings at...

#### What is the surface area formula

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. We can also label the length (l), width (w), and height ...

#### What is a vector measurement

Vector is a measurement that refers to both the magnitude of the unit and the direction of the movement the unit has taken....

#### What is variations in math

Variable and Constant: The changing of variable parameters is called as variation. In problems relating to two or more variables, it is seen t...

#### What is the percentage of 200

Solution for 200 is what percent of 200.: Percentage solution with steps: Step 1: We make the assumption that 200. is 100%...

#### How do you graph a function rule

Graphing A Function Rule To graph a function, you have to select x-values and plug them into the equation. Once you plug those values in...

#### What are independent and dependent events

An independent event is an event in which the outcome isn't affected by another event. A dependent event is affected by th...

#### How many blades of grass in an acre

Since there are 6,272,640 square inches in an acre: times 50 blades per square inch equals blades of grass on average in a well k...

#### How to calculate multiplicative inverse

rj = ax + by, with x and y integers. In the special case that gcd(a, b) = 1, the integer equation reads 1 = ax + by. so that (the residue of) y...

#### What is the lcm of 2 3 and 5

Answer: LCM of 2, 3, and 5 is 30....

#### When to use l'hopital's rule

L'Hôpital's rule can only be applied in the case where direct substitution yields an indeterminate form, meaning 0/0 or ±∞/±∞. So if f a...

#### How fast is 35 km in mph

Convert 35 Kilometers per Hour to Miles per Hourkm/hmph35.0021.74835.0121.754<...

#### What weighs 8 pounds

Whether you are looking for fun facts or just feeding your curiosity, these items will give you a rough idea of what things weigh.

#### How did leap year come about

Caesar and the philosopher Sosigenes of Alexandria made one important modification: instead of relying on the stars, they would simply add a day to ev...

#### What goes into 125

The factors of 125 are 1, 5, 25, and 125....

#### How to do sampling

In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected. On...

#### A parabola has a vertex at (-1, 0) and opens down. what is the equation of the parabola?

A parabola opens down, therefore a < 0. Answer: y =a(x + 1)² where a < 0....

#### How to learn ratios

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.For example, if there is 1 boy and 3 girls you c...

#### How to factor algebraic equations

So, if, in your equation, your b value is twice the square root of your c value, your equation can be factored to (x + (sqrt(c)))...

#### Which statement is the law of syllogism?

Explanation; -The Law of syllogism is a valid argument form of deductive reasoning that follows a set pattern. It is similar to the transitive ...

#### Vanadium has a body-centered cubic unit cell. how many atoms of v are present in each unit cell?

There are two (2) Vanadium (V) atoms present in 1 unit cell....

#### What does expanded form

When we expand a number to show the value of each digit, we're writing that number in expanded form. Writing numbers in expanded form...

#### 2 is what percent of 4

FractionPercent1/425%2/450%3/475%...

#### How many days of sunshine in colorado springs

On average, there are 243 sunny days per year in Colorado Springs....

#### What does the definite integral represent

Definite integrals represent the area under the curve of a function and above the 𝘹-axis....

#### What is the first step in solving the quadratic equation x2 – 40 = 0?

what is the first step in solving the quadratic equation x2 – 40 = 0? taking the square root of both sides of the equation

#### What is 15 of 79

Percentage Calculator: 15 is what percent of 79? = 18.99....

#### How to calculate hours and minutes

How to Convert Minutes to Hours and Minutes, Alternate Methoddivide the minutes by 60.if the result is a ...

#### How many 16 oz bottles in a gallon

A gallon of water by definition is 128 fluid ounces in the United States. Water bottles can vary in size, but the total number of bottles makin...

#### What is 585

14K 585, or simply “585.” This stamp refers to the amount of gold in the alloy per 1,000 units. 14K gold contains 58.3% pure gold, o...

#### What is the derivative of square root of x

Derivative RulesCommon FunctionsFunctionDerivativeSquare Root√x(½)x-½Exponen...

#### What does divisible mean in mathematics

Divisibility means that a number goes evenly (with no remainder) into a number. For example, 2 goes evenly into 34 so 34 is divisible by...

#### What is exponential notation in math

Exponential notation is a form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponen...

#### What does the line of best fit show

The Line of Best Fit is used to express a relationship in a scatter plot of different data points. It is an output of regression analysis and c...

#### How many electrons in an atom could have n=4 l=1

Table of Allowed Quantum NumbersnlNumber of electrons402...

#### Why do we use logarithmic scales

There are two main reasons to use logarithmic scales in charts and graphs. The first is to respond to skewness towards large values; i.e., case...

#### The following is an example of what type of sequence? 3, 11, 19, 27, 35…

Calculus Examples This is an arithmetic sequence since there is a common difference between each term. In this case, adding 8 to the pre...

#### How prokaryotes reproduce

Prokaryotes reproduce through a cell division process called binary fission. Except in the case of rare mutations, or changes in DNA sequence,...

#### Which is bigger meter or yard

In the metric system, the basic unit of length is the meter. A meter is slightly larger than a yardstick, or just over three feet....

#### What shape is a kite

Explanation: A kite is a four-sided shape with straight sides that has two pairs of sides. Each pair of adjacent sides are equal ...

#### What are complex numbers used for

Uses of complex numbers Complex numbers can be used to solve quadratics for zeroes. The quadratic formula solves ax2 + bx + c = 0...

#### What is the property of multiplication

Commutative property of multiplication states that the answer remains the same when multiplying numbers, even if the order of numbers ar...

#### What can i use to measure a cup

However, not everyone has a set of measuring cups and spoons in their kitchens.When you don't have either of these basic baking sets, ...

#### How to find the square root of a fraction

To find the fraction square root, first, find the square root of the numerator and then find the square root of denominator. After finding the ...

#### Why are strong forces able to hold atomic nuclei together?

It is known that nucleus of an atom contains protons and neutrons. Thus, we can conclude that strong forces are able to hold ...

#### How long does it take to type 5 pages

Writing 5 pages will take about 1 hours for the average writer typing on a keyboard and 2.1 hours for handwriting. However, if the content need...

#### How to find net exports

Net exports are a measure of a nation's total trade. The formula for net exports is a simple one: The value of a nation's total expor...

#### What is a domain in algebra 2

The domain of a relation (or of a function) is the set of all inputs of that relation. For example, the domain of the relation (0, 1),(1...

#### How does standard deviation change when multiplying by a constant

Standard Deviation Standard deviation. Adding or subtracting a constant from the scores does not change the sta...

#### What does the word and mean in math

The multiplication principle stated in the previous lesson relies on actions being independent, that the outcome of one action can in no way affect th...

#### What are grams used to measure

Gram (measure): A unit of measurement of weight and mass in the metric system. In weight, a gram is equal to a thousandth ...

#### How to write a billion in numbers

1,(one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following and preceding 1, One

#### What is the gcf of 8 and 28

What is the Greatest Common Factor of 8 and 28? Greatest common factor (GCF) of 8 and 28 is 4. We will now calculate the prime fa...

#### How to calculate total product

It refers to the total amount of output that a firm produces within a given period, utilising given inputs. It is output per unit of inputs of ...

#### What does 1 10 scale mean

When buying an RC vehicle, the box will often note its scale, which refers to the size of the model as compared to its full-size counterpart. F...

#### How to find the average speed of something

Average SpeedWhile the speed of the object may vary during the total time it is moving, the average speed is the r...

#### Which best describes probability

Explanation; Probability is the extent to which something is probable; the likelihood of something happening or being the case. It is the chanc...

#### What does y represent in y=mx+b

The formula y=mx+b describes a line in the Cartesian Coordinate System. You're right about m being the slope and b being ...

#### Which three lengths could be the lengths of the sides of a triangle

The answer is all can represent the three sides of the triangle. Options (6 cm, 22 cm, 10 cm), (7 cm, 25 cm, 11 cm), (9 cm, 22 cm, 11 cm...

#### What does interior mean in math

Refers to an object inside a geometric figure, or the entire space inside a figure or shape. Polygon Interior Angles....

#### How to find vertex from standard form

You can see how this relates to the standard equation by multiplying it out: y=a(x−h)(x−h)+ky=ax2−2ahx+ah2+k . This means that in the sta...

#### If a circle is one, how many is an octagon?

Related Questions & AnswersDo Genes EvolveWhat Are The Characteristics Of Mendeleevs Periodic Table...