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Klio2033 [76]
3 years ago
5

The new ranking functions make it easy to include a column in a result set that provides the sequential ranking number of each r

ow within a/an ___________________________.
Mathematics
1 answer:
arlik [135]3 years ago
8 0

Answer:

Partition

Step-by-step explanation:

Partition in mathematics is a way of calculating maths problems that involve enormous numbers by halving or ranking them into smaller units so they’re straightforward to work with. For instance, rather than adding up digits in a column,

86

+32

118

You can rank these numbers into units, like this…

80 + 6 + 30 + 2

Rearrange and the tens up

80+30+6+2=118

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(x+7)/(x^2-49) find the domain. show work
harina [27]
\large\begin{array}{l} \textsf{Find the domain of}\\\\ \mathsf{f(x)=\dfrac{x+7}{x^2-49}}\\\\ \mathsf{f(x)=\dfrac{x+7}{x^2-7^2}}\\\\\\ \textsf{Factor out the denominator using special products:}\\\\ \textsf{(a difference of squares)}\\\\ \mathsf{f(x)=\dfrac{x+7}{(x+7)(x-7)}} \end{array}


\large\begin{array}{l} \textsf{Restrictions for the domain:}\\\\ \bullet~~\textsf{Denominators must not be zero:}\\\\ \mathsf{(x+7)(x-7)\ne 0}\\\\ \begin{array}{rcl} \mathsf{x+7\ne 0}&~\textsf{ and }~&\mathsf{x-7\ne 0}\\\\ \mathsf{x\ne -7}&~\textsf{ and }~&\mathsf{x\ne 7} \end{array} \end{array}


\large\begin{array}{l} \textsf{Therefore, the domain of f is}\\\\ \mathsf{D_f=\{x\in\mathbb{R}:~~x\ne -7~~and~~x\ne 7\}}\\\\\\ \textsf{or using a more compact form}\\\\ \mathsf{D_f=\mathbb{R}\setminus\{-7,\,7\}}\\\\\\ \textsf{or using the interval notation}\\\\ \mathsf{D_f=\left]-\infty,\,-7\right[\,\cup\,\left]7,\,+\infty\right[.} \end{array}


<span>If you're having problems understanding this answer, try seeing it through your browser: brainly.com/question/2155752


\large\textsf{I hope it helps. :-)}



Tags: <em>function domain real rational factorizing special product interval</em>

</span>
7 0
3 years ago
X + 4y = -3 x + 7y = - 12 *
Leokris [45]

Answer:

??? Please be specific

Step-by-step explanation:

5 0
4 years ago
Layala and Zahra have 2700 marbles in the ratio of 2:7. How many marbles Zahra must have gave away so that they both would have
Zolol [24]

Answer:

1500

Step-by-step explanation:

Given that :

Total number of marbles held by Layala and Zahra = 2700

Ratio = 2 : 7

Layala's share of marbles : (2 / (2+7)) * 2700

= 2/9 * 2700

= 600

Zahra's share of marble : (7 / (2+ 7)) * 2700

= 7 / 9 * 2700

= 2100

Hence, Zahra must have given away (2100 - x) = 600

2100 - 600

= 1500 marbles, so that both Zahra and Layala have the same number of marbles

5 0
3 years ago
Which best explains why all equilateral triangles are similar?
Neko [114]

Answer:

D

Step-by-step explanation:

I hope this helps you out!

7 0
3 years ago
Read 2 more answers
For the function y = 9x, what is the output value if 5 is the input value?
vichka [17]

Answer:

45

Step-by-step explanation:

y=9x

y=9(5)

y=45

6 0
3 years ago
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