They mean that if you subtract one of the two digit numbers from another then that is the difference. The numbers in the question are usually smallest first so you can't subtract like that. In these questions you may change the order of the numbers.
Ummm..... i don't know because i'm asking the question so you tell me
For any index n (>1) calculate D(n) = U(n) - U(n-1). If this is the same for all integers n (>1) then D is the common difference. The sign of D determines whether the common difference is positive or negative.
Subtracting an integer is the same as adding its opposite.Examples:In the following examples, we convert the subtracted integer to its opposite, and add the two integers.7 - 4 = 7 + (-4) = 312 - (-5) = 12 + (5) = 17-8 - 7 = -8 + (-7) = -15-22 - (-40) = -22 + (40) = 18Note that the result of subtracting two integers could be positive or negative.
Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.
It helps if you put the positive one first. Then, if you realize that adding a negative is the same as subtracting a positive, the rest is easy. 7 + (-3) = 7 - 3 = 4 3 + (-7) = 3 - 7 = -4
Examples: Write the first integer as it is, turn the subtraction into the addition, change the sign of the second integer, and follow the rules of addition. -7 - (2) = -7 + (-2) = -(7 + 2) = -9 10 - (-8) = 10 + (+8) = 18
Ummm..... i don't know because i'm asking the question so you tell me
You need to explain the problem better. Are they separate integers, fractions, positive, negative etc
For any index n (>1) calculate D(n) = U(n) - U(n-1). If this is the same for all integers n (>1) then D is the common difference. The sign of D determines whether the common difference is positive or negative.
Subtracting an integer is the same as adding its opposite.Examples:In the following examples, we convert the subtracted integer to its opposite, and add the two integers.7 - 4 = 7 + (-4) = 312 - (-5) = 12 + (5) = 17-8 - 7 = -8 + (-7) = -15-22 - (-40) = -22 + (40) = 18Note that the result of subtracting two integers could be positive or negative.
At least one of the integers is negative.
Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.
It helps if you put the positive one first. Then, if you realize that adding a negative is the same as subtracting a positive, the rest is easy. 7 + (-3) = 7 - 3 = 4 3 + (-7) = 3 - 7 = -4
by adding, subtracting, dividing, and multiplying.
This expression is the difference of squares. It can be factored to (9 - 7n4)(9 + 7n4)
15
The sign of the sum will be the same as the number with the greatest absolute value. -9 + 4 = -5 -4 + 9 = 5