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What are the rules for subtracting integers?
- By Forinfos
- 20/05/2025
- 0 comments
If -5 is subtracted from -9, the result is -4: (-9) – (-5) = -9 + 5 = -4. But if -9 is subtracted from -5, the result is 4, a positive integer: (-5) – (-9) = -5 + 9 = 4.\nIf a positive integer is subtracted from a negative integer, the result is a negative integer: (-9) – (5) = -14.\nIf a negative integer is subtracted from a positive integer, the result is a positive integer: 9 – (-5) = 9 + 5 = 14. If a positive integer is subtracted from a positive integer, it gives either a positive integer or a negative integer: 9 – 5 = 4 or 5 – 9 = -4.
What is the lowest common multiple of 9 and 12?
- By Forinfos
- 20/05/2025
- 0 comments
The best method to find the least common multiple is to split both numbers into prime factors. That means 9 is 3 x 3, and 12 is 2 x 2 x 3. Next, it is best to count how many times each prime factor appears in each number. Three appears twice in 9 and once in 12. Two appears twice in 12 and never in 9. Take the maximum amount each prime appears in either number. That means 3 twice and 2 twice. Finally multiply the primes together to find the least common multiple. 3 x 3 x 2 x 2 equals 36, which is the least common multiple of 9 and 12.
What is a long division symbol called?
- By Forinfos
- 20/05/2025
- 0 comments
A long division symbol looks like a right or closing parenthesis ")" attached to a long vertical bar. The right parenthesis is sometimes replaced by a small horizontal bar.The long division symbol has been around since at least the 1880s. To use this symbol, the dividend is located to the left of the ")" and the quotient is typically written under the line. The answer to the problem is written above the quotient, on top of the horizontal line.
How do you find the mean in math?
- By Forinfos
- 20/05/2025
- 0 comments
Add up the numbersWrite the numbers of which you are trying to find the mean as an equation where each number is being added to the next. For example, if you're trying to find the mean of 89, 71, 16 and 24, you'd write 89 + 71 + 16 + 24. Add up the numbers to get one total. In the previous example, the numbers would equal 200.Count how many numbers are in the setLook at the original set of numbers and count how many different numbers are in the set. In the above example, there are four numbers.Divide the sumTake the sum of all the numbers and divide it by the amount of numbers in the..
What is a double bubble map?
- By Forinfos
- 20/05/2025
- 0 comments
A double bubble map is much like a Venn Diagram. The two center circles hold the items being compared. The outside bubbles hold items, descriptive phrases and other factors that describe only the object to which they are connected. The bubbles on the inside that connect to both center circles contain information that pertains to both the items in the center circles. As a result, the double bubble map shows areas in which the two items differ and others in which they share similar traits.
When was trigonometry invented?
- By Forinfos
- 20/05/2025
- 0 comments
The first exposition of modern trigonometry was in a series of five books published by the Indian mathematician Vrahamihira. In this work, Vrahamihira relied on an older Babylonian table of chords to develop his own table of sines. This work was adopted by Islamic mathematicians and eventually passed to Europe, where the modern system of notation was developed by Leonhard Euler in the 18th century.
How do you do slope intercept form?
- By Forinfos
- 19/05/2025
- 0 comments
To put a linear equation into slope-intercept form, find the values of m and b. The slope of a line, m, can be found by measuring the distance between two points on the line. The equation for slope is m = (y2 - y1) / (x2 - x1). The y-intercept of a line, b, can be found by plugging the x and y values from any point on the line into the equation. For example, if a line's slope is three, and the line passes through the point (8, 4), one would calculate the y-intercept by plugging those values into the slope-intercept form formula. The steps of this process are:\ny = mx +b\n4 = 3(8) + b\n4 =..
What is a carrying capacity formula?
- By Forinfos
- 19/05/2025
- 0 comments
The difference between an exponential and logistic growth model is evident when looking at a graph of the two populations over time. The exponential model, one that does not consider carrying capacity, will grow exponentially forever. However, the logistic model, which is a model of populations that does consider the carrying capacity, grows rapidly and then approaches the carrying capacity asymptotically. As a result, after the population reaches its carrying capacity, it will stop growing and the number of births will equal the number of deaths.
What are the prime factors of 14?
- By Forinfos
- 19/05/2025
- 0 comments
Prime numbers are defined as numbers that can only be evenly divided by one and themselves. The first few prime numbers are 2, 3, 5, 7 and 11. A factor refers to any number that can be evenly multiplied into a large number. Two is divisible to 14, seven is the prime factorization. Note that 14 has no other factors other than one and 14 itself, making two and seven its only factors, which are both prime as well.
What are some examples of unit rates?
- By Forinfos
- 19/05/2025
- 0 comments
Another commonly encountered type of unit rate is the unit price. This is a measure of the number of dollars spent per unit of measurement for a particular product. For instance, if a customer pays $1.70 for a 20-ounce bottle of soda, the unit price would be 8.5 cents per ounce. However, if a customer pays 99 cents for a 2-liter bottle of soda containing 67 ounces, the unit price would be only 1.4 cents per ounce.