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sineoko [7]
3 years ago
13

Simplify the the problem 2x^2-4x-390=0 ​

Mathematics
1 answer:
Sergio039 [100]3 years ago
7 0

Answer:

The answer is <em>-195</em>

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Find the value of x in the equilateral triangle.<br> Х<br> 3 in
swat32

Answer:

x≈3.35, or the square root of 11.

Step-by-step explanation:

Use the pythagorian therom. 3²+1.5²=x²

(Half of 3 is 1.5 and the line splits it in half)

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2 years ago
What is the highest 7th grade math class you can take?
NISA [10]

Answer:

honors

Step-by-step explanation:

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3 years ago
A researcher is interested in knowing whether responses to lowering the legal age for drinking alcohol varies by gender. Which s
likoan [24]

The statistical test that would be most appropriate determine the answer the researcher is interest in knowing is a chi-square test.

<h3>What is a chi-square test?</h3>

A chi-square test is a statistical test used to test the relationship between categorical variables. It is used to determine the difference between the expected data and the observed data is due to chance.

Chi squared = \frac{(O_{i} - E_{i} )^{2} }{E_{i} }

Where:

  • O_{i} = observed value
  • E_{i} = expected value.

The researcher is interested in knowing if the response to lowering the legal age for drinking alochol (observed value)) varies by gender (expected value). Thus, a chi-square test would be used.

To learn more about chi-square, please check: brainly.com/question/14082240

8 0
2 years ago
Select the reason that best supports statement both 2 and 8 in the given proof.​
LenKa [72]
It’s probably 10 given proof
7 0
2 years ago
The ordered pairs (6,8), (9, 12), (x, 20), (18, y) represent a proportional relationship. Find the value of X and the value of Y
sasho [114]

Answer:

x=15 y=24

Step-by-step explanation:

This is because the rule is x goes up 3 y goes up 4

(9,12)->(x,20)

it skips one, so instead of adding 3 we add six

x=15

(15,20)->(18,y)

you follow the rule and 4.

Y=24

7 0
3 years ago
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