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Veronika [31]
3 years ago
14

Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Ahat [919]3 years ago
6 0
Hfhdhdbfbfbdbdhdhe ends
ahrayia [7]3 years ago
4 0

Answer:

9. x=-6, y=0

10. x=-9, y=-10

11. x=3, y=-1

Step-by-step explanation:

2x-9y=-12\\3x+18y=-18

Multiply the first equation by 2.

4x-18y=-24\\3x+18y=-18

Add the equations.

7x=-42

x=-6

We figured out x now we have to figure out y. To figure out y plug in x into any equation.

2(-6)-9y=-12

-12-9y=-12

-9y=0

y=0

Your answer is x = -6 and y = 0 for number nine.

6x+3y=24\\2x+3y=-12

Change the signs of the second equation becuase 3y and 3y are both positive. We need one of them to be negative.

6x+3y=24\\-2x-3y=12

Add them.

4x = 36

x=9

Now we have to figure out y.

2(9)+3y=-12

18+3y=-12

3y=-30

y=-10

x=-9 and y=-10 is your answer to number ten.

10x+5y=25\\-7x-3y=-18

30x+15y=75\\-35x-15y=-90

-5x=-15

x=3

-7(3)-3y=-18

-21-3y=-18

-3y=3

y=-1

x=3 and y=-1 is the answer to number eleven. I hope this helps! Let me know if I got anything wrong.

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What do outliers, mean, median, mode, and range tell you PLEASE SHOW EXAMPLES!!!!!!
Zanzabum

Hello there!

Outlier is a value in a data set that varies significantly from the rest of the data.

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<u><em>Outlier = 1</em></u>

Way too high: 4, 3, 2, 21, 7

The number should be the order from least to greatest are: 2, 3, 4, 7, 21.

<u><em>Outlier = 21</em></u>

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Data with an outlier: 4, 5, 7, 11, 12, 15, 58

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Median is the middle value in an ordered list of numbers.

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1, 5, 8, 10, 13

Numbers not already in order:

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Range is a difference between the maximum (highest) and minimum (lowest) values. It has one type of measure of spread.

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Hope this helps! Thank you for posting your question at here on Brainly.

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3 years ago
mr.wilson bought 4 tires for $390.60. If each tire cost $90 before tax was added. What tax rate did he pay on the tires?
elixir [45]
First  calculate after tax tire price 
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take the $97.65 divided by 90 
97.65 / 90 = 1.085 
1.085 is the rate of tax he paid per tire 
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