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Irina18 [472]
3 years ago
8

Please help me with answer I need help now

Mathematics
2 answers:
Mama L [17]3 years ago
8 0

Answer:

2 + 3

Step-by-step explanation:

Nookie1986 [14]3 years ago
4 0
First option

I’m pretty sure it’s the first option due to that they scored more points instead of losing points.
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The scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 9. A failing grade on th
mylen [45]
Given:Sample mean= 57 

Standard Deviation= 9 
score of 59 

we go to our standard formula: 


(score - mean) / sd = z 
(59 - 57) / 9 = z 

2/9 = z 

0.2222 = z
Failing score cutoff would be equal to Mean - 2SD = 67 - 2(9) = 48 is failing score cutoff.
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3 years ago
Short Answer Note: Your teacher will grade your responses to the next two questions to ensure you receive proper credit for your
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5

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3 years ago
Which expressions are equivalent to
Papessa [141]

Answer:both 1 and 2 are correct

Step-by-step explanation:

3 0
3 years ago
Please help me please! I’m stuck, and I can’t figure this out. Please include the form in your answer! No phony answers pls!
nevsk [136]

Answer:

x ≈ - 6.74, 0.74

Step-by-step explanation:

x² + 6x - 5 = 0 ( add 5 to both sides )

x² + 6x = 5

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(3)x + 9 = 5 + 9

(x + 3)² = 14 ( take square root of both sides )

x + 3 = ± \sqrt{14} ( subtract 3 from both sides )

x = - 3 ± \sqrt{14}

Then

x = - 3 - \sqrt{14} ≈ - 6.74 ( to the nearest hundredth )

x = - 3 + \sqrt{14} ≈ 0.74 ( to the nearest hundredth )

6 0
3 years ago
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