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ycow [4]
3 years ago
10

I need help with which is solution to the system

Mathematics
1 answer:
ollegr [7]3 years ago
3 0

Answer:

There are 2 solutions and they are 3 and 4.

<em><u>Could I please have BRAINLIEST.</u></em>

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A sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To
Vesnalui [34]

Answer:

(-3.07, 11.07)

Step-by-step explanation:

Given that a sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used eighteen adult male volunteers. These volunteers were randomly divided into two groups of nine subjects each.

Group   Group One     Group Two  

Mean 300.00 296.00

SD 8.00 6.00

SEM 2.67 2.00

N 9     9    

The mean of Group One minus Group Two equals 4.00

 

standard error of difference = 3.333

   df = 16

t = 1.2000

Margin of error = 3.3333* t critical = 3.3333*2.121

 95% confidence interval of this difference: From -3.07 to 11.07

7 0
3 years ago
A brand new car is purchased for $45000 and depreciates by 8% per year. How much is it worth after?
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I=prt
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4 years ago
PLEASE HELPPPPPPPP MEEEEEEE
Kruka [31]
  • Answer:

can u explain it

Step-by-step explanation:

I can't understand it

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