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Neporo4naja [7]

3 years ago

6

A lamp originally costs $30 Krishna has a 5% off coupon for the lamp After the coupon a 5% sales tax is applied Will she pay mor

e than $30 less than $30?
1. More than $30

2. Less than $30

3. Exactly $30

1 answer:

Ghella [55]3 years ago

5 0

3. The 5% off will make it 29.50 and with the tax it will be back to 30

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When do I use elimination and when do I use substitution?

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Elimination is used when there is a common factor between the two equations. Substitution is used in cases where finding a common term just isn’t possible, or too complicated.

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What are the next 3 numbers in this pattern of integers -2, -1, -1, 0, -1, 1, -2

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Answer:

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Step-by-step explanation:

Given pattern of integers is -2,-1,-1,0,-1,1,-2

To find their next 3 numbers of the given pattern :

Let $a_{1}=-2$

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$=-1-(-1)$

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Therefore $a_{4}=0$

Similarly we have $a_{5}=-1$ , $a_{6}=1$ , $a_{7}=-2$

The general form to the given pattern is

$a_{n}=a_{n-2}+a_{n-1}$ for $n={\{1,2,3,4,5,6,7,8,9,10}\}$

Therefore to find the $a_{8},a_{9},a_{10}$

Put n=8 in $a_{n}=a_{n-2}-a_{n-1}$

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Put n=9 in $a_{n}=a_{n-2}-a_{n-1}$

$a_{9}=a_{9-2}-a_{9-1}$

$=a_{7}-a_{8}$

$=-2-(3)$

$a_{9}=-5$

Put n=10 in $a_{n}=a_{n-2}-a_{n-1}$

$a_{10}=a_{10-2}-a_{10-1}$

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$a_{10}=8$

Therefore the next 3 numbers are 3,-5,8

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3 years ago

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Hey buddy I am here to help!

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