Math

Refine Search

How do you convert circumference to diameter?

Circumference is defined as the distance around a circle; the diameter is the straight-line distance across the circle that touches two points on its border and goes through its center. The ratio of a circle's circumference to its diameter is the constant pi. In other words, circumference/diameter = pi, or circumference = pi * diameter. Therefore, the length of the diameter of a circle is equivalent to its circumference divided by pi.\nSimilarly, the length of a circle's radius, (the distance from the circle's center to any point on its border), is equivalent to its circumferenc..

Continue Reading

What is an example of an array?

In C++, an array's size is statically defined within the code. Keys are always numeric, and the order of the elements defines what the keys are. An example array in C++ is char x[] = { 'a', 'b', 'c' }. Because arrays begin at 0, x[0] is "a", x[1] is "b" and x[2] is "c". C++ uses arrays to represent strings of characters.\nIn PHP, however, an array is an expandable set of key-value pairs, and both keys and values are largely arbitrary. Therefore, it is possible to have an array where the element "a" is the key and 1 is the value. The only restriction is that t..

Continue Reading

What is the difference between epicenter and hypocenter?

Hypocenters are found at a considerable depth below the surface. Vibrating waves move away from the hypocenter in various directions. The waves can travel to all places on the Earth and make the planet rapidly vibrate because of their immense power.\nWhile the hypocenter is the origin of earthquakes, scientists typically plot the epicenter on a map to identify the location of the quake. This method of mapping an earthquake’s location is the reason large quakes are usually named after the city or geographic location closest to the epicenter.\nShallow-focus earthquakes occur from 0 to 40 miles..

Continue Reading

How does a person convert a high school GPA of 85.492 to a 4.0 scale?

The 4.0 scale ranges from a low of 0.0 to a high of 4.0, with 0.0 being a letter grade of F, or 65 percentage points or less, and 4.0 being 93 percentage points or higher, or a letter grade of A.Some colleges require a specific minimum GPA for admittance or for scholarship opportunities, and that information can be found by checking with each individual college or the financial aid department at the chosen college.

Continue Reading

Who is the father of algebra?

The books that Diophantus authored contain the earliest known use of syncopated notation. An entire area of study is named after the Greek mathematician, called Diophantine analysis and Diophantine equations. The analysis portion is where whole number solutions are looked for as the answer to equations. Diophantine equations are polynomial equations with whole number coefficients and only solutions with whole number answers are sought to solve them. It has been debated if Diophantus is truly the father of algebra or if the honor should go to one of the older mathematicians in history.

Continue Reading

How do you find the equation of a circle?

Find the coordinatesDetermine what the coordinates are for the center and what the radius equals.Insert the coordinates and the radius value into the equationPlug the coordinates and the radius value into the equation by substituting the information in place of the corresponding variable.Watch the signsIf the center is negative, the negative sign in the equation becomes positive. If the center is positive, the sign in the equation stays the same.

Continue Reading

What are the factors of 48?

Finding the factors of a whole number requires some trial and error in the form of a series of division problems. The first two factors in the factor list are the number itself and the number 1. Even numbers like 48 are divisible by 2, so the next step is to calculate the result of dividing 48 by 2, which adds 2 and 24 to the factor list. Since 48 is divisible by 3 with a whole number quotient of 16, 3 and 16 are factors. The process continues by dividing 48 by 4, 5, 6 and so on.\nAs one works through increasing numbers, the corresponding quotients decrease. At some point, all of the potential..

Continue Reading

How do you calculate the grade of a slope?

To ensure correct calculations, first convert all variables to the same units of measurement, or like terms. For example, if the altitude is enumerated in feet and the distance in miles, convert the distance to feet.\nReal-world instances of professions that utilize slope calculations include roofers, carpenters and transportation planners. Grades of slopes are also posted on road signs in mountainous regions to warn motorists of steep inclines and declines.

Continue Reading

How many square feet are in a yard?

Since a square is a rectangle, the area may also be determined by multiplying its length by its width (3 x 3). In measuring smaller areas, square feet may be further broken down into square inches. There are 12 inches in 1 foot, so 1 square foot is equal to 144 square inches, or simply 12 squared.

Continue Reading

How is the quotient of two fractions found?

A quotient of two fractions involves dividing one fraction by another. This can be rewritten as the first fraction being multiplied by the divisor, if the divisor has its numerator and denominator switched. For example, 1/4 divided by 5/4 can be re-written as 1/4 multiplied by 4/5. Because the denominator of the dividend and the numerator of the second term are both 4, they cancel out, leaving a final answer of 1 over 5, or 1/5.

Continue Reading
Showing 3501 to 3510 of 3956 (396 Pages)