3 years ago

In what ways is it useful to develop an algorithm for adding and subtracting rational numbers?

2 answers:

7 0

Answer:

To add or subtract some rational numbers, you have to change the rational numbers so they have a common denominator. When you have a common denominator, you can then go on with the addition or subtraction on the numerator part.

Oksi-84 [34.3K]3 years ago

4 0

Answer:

To add or subtract these rational numbers, you first need to change your rational numbers so that they share a common denominator. Once you have a common denominator, you can then go ahead with the addition or subtraction of just the numerator part

Step-by-step explanation:

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Why does a horizontal line have a slope of zero, but a vertical line have an undefined slope?

shusha [124]

Refer to the diagram shown below.
Define two positions on each line as A (x₁, y₁) and B(x₂, y₂).
Then the slope is
$m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Horizontal line:
Define A (0, 1) and B (1,1).
The slope is
$m= \frac{1-1}{1-0}=0$

Vertical line:
Define A( (1,0) and B(1,1).
The slope is
$m= \frac{1-0}{1-1}= \frac{1}{0}$ (undefined)