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How do you write in scientific notation?

Take the number written in standard notation, and look for the leftmost or rightmost digits for large and small numbers respectively. Then, place a decimal point so that it creates a new number between 1 and 10. This is the coefficient that forms the main part of the number in scientific notation. Count the number of decimal places that it takes to reach the original number. For example, the number 9,345,000,000 has 9.345 as its coefficient in scientific notation. To reach the original number, the decimal must move nine places to the right. This is expressed as 9.345 * 10^9 or 9.345E+9. Conver..

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What is the purpose of a Gantt chart?

The left side of a Gantt chart shows a listing of the activities involved in a project, and across the top is a timeline going through the entire expected period in which the project takes place. Beneath the timeline is a bar for each activity, situated beneath the weeks or months on the time line in which that activity should take place. The fact that the bars overlap is helpful for project managers to see which elements take place at the same time.\nThe first Gantt charts were drawn by hand, which became quite laborious. However, modern project management and spreadsheet software makes it ea..

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How do you calculate square roots?

To calculate the square root of a number by hand, one can use a variety of approaches. If the goal is to simplify the square root, you could, for example, change the square root of 50 into 5 times the square root of 2. Reducing the number to its simplest terms is always a good solution to finding the square root of a number.\nGoing further, by hand, involves estimation first. In the previous example, 5 times the square root of 2 can be estimated by multiplying 5 by 1.41, which is the square root of 2, to get approximately 7.1. For a larger number, you could find the square root using prime fac..

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What is a chart of prime numbers?

While it is only possible for one to be divided by itself, it is not considered a prime number. A prime number must be greater than one. Therefore, it must always be positive. Prime numbers are not rare, but they are more difficult to work with because they have no factors other than one and itself. A chart of prime numbers can be of any size; it is dependent on what is required for the mathematical situation.

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What is 20 squared?

Since 20 squared is 400, the square root of 400 is 20. The square root of a given number is the number that is multiplied by itself to yield that particular number. All squares are positive, but square roots are positive or negative. For example, the other square root of 400 is -20. Since multiplying two negatives makes a positive, -20 times -20 also equals 400.

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What is the square root of 90?

Sometimes, it is possible to simplify the square root of a number by factoring out the square root of a whole number. Since nine times 10 equals 90, the formula is simplified by writing it as the square root of nine times the square root of 10. Since the square root of nine is three, it can be further simplified as three times the square root of 10.

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What are some tips to follow when subtracting mixed numbers?

When denominators in fractions are equal, subtract the whole numbers followed by the numerators. In the problem 8 4/5-1 1/5, solve 8-1 followed by 4-1; the answer is 7 3/5. If the problem is 8 1/5-1 4/5, one must borrow from the 8 to form the problem 7 6/5-1 4/5. Solve 7-1 then 6-4; the answer is 6 2/5.\nWhen denominators are not equal, one must make them equal before solving. In the problem 6 7/8-2 3/4, the denominators must be 8 before answering. Multiplying the 4 by 2 makes the denominator 8. The numerator also is multiplied by 2, so the problem becomes 6 7/8-2 6/8. Subtract the whole numbe..

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What are similar rectangles?

If there is a rectangle with two sides of 12 inches and two sides of 8 inches and another rectangle with two sides of 6 inches and two sides of 4 inches, these two shapes are similar rectangles. The first rectangle's side lengths made into a fraction are 12 over 8 (12/8). The second is 6 over 4 (6/4). These two fractions are equal.

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How do you use integers in daily life?

Positive integers, or whole numbers, are used in many ways during daily life. Highway numbers are posted along with roadway speed limits. Integers are used to understand what speed to drive on a given road. Numbers on clocks are used to understand time and to set clock alarms. There are numbers on buildings and houses to identify addresses and numbers for floor levels within buildings. Maps utilize integers to provide direction and information.\nNegative integers may be less obvious for use in everyday life. Some examples of negative integer use include the thermometer readings, keeping score ..

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How many sides are there in a parallelogram?

The perimeter of a parallelogram is obtained through the formula 2(a + b), in which "a" and "b" represent the lengths of the opposite and congruent sides. The area of a parallelogram is determined by multiplying the length of its base by its height, the same formula which is used for a finding the area of a rectangle. This is because a parallelogram can be rearranged into a rectangle by dividing it into a right triangle and a trapezoid and then moving the right triangle over to the other side.Most of the theorems governing parallelograms are from Euclidean geometry and date back to more than 2..

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