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Tanzania [10]
3 years ago
8

-3x - 7y=2 x + 3y = -2 solving systems by elimination

Mathematics
2 answers:
Andrew [12]3 years ago
5 0

Answer:

(4,-2)

Step-by-step explanation:

x = 4

y = -2

Dovator [93]3 years ago
5 0

Answer:

x= 4

y= -2

Step-by-step explanation:

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Convert these numbers into Scientific Notation
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The ratio of quarters to dimes in a coin collection is 5:3. You add the same number of new quarters as dimes
Anon25 [30]

The ratio of quarters to dimes is not still 5 : 3

<u>Solution:</u>

Given that ratio of quarters to dimes in a coin collection is 5:3 .

You add same number of new quarters as dimes to the collection .  

Need to check if ratio of quarters to dimes is still 5 : 3

As ratio of dimes and quarters is 5 : 3

lets assume initially number of quarters = 5x and number of dimes = 3x.

Now add same number of new quarters as dimes to the collection

Let add "x" number of quarters and "x" number of dimes

So After adding,

Number of quarters = initially number of quarters + added number of quarters = 5x + x = 6x

Number of dimes = initially number of dimes + added number of dimes

= 3x + x = 4x

New ratio of quarters to dimes is 6x : 4x = 3 : 2

So we have seen here ratio get change when same number of new quarters and dimes is added to the collection

Ratio get change from 5 : 3 when same number of new quarters and dimes is added to the collection and new ratio will depend on number of quarters and dimes added to collection.

3 0
4 years ago
(3,4); y&gt;x+2 tell whether each pair is a solution of the given inequality
ch4aika [34]

(3,\ 4)\to x=3,\ y=4\\\\y > x+2

Substitute the values of x and y to the inequality:

4 > 3+2\\\\4>5\ \ FALSE

<h3>Answer: (3, 4) is not a solution if given inequality.</h3>
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Which set of ordered pairs does not show y as a function of x​
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Answer:

b does represent a function

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