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tiny-mole [99]
3 years ago
8

Select from the drop-down menu to correctly identify the property shown. 0.8+(1.2+(−3))=(0.8+1.2)+(−3)

Mathematics
2 answers:
UkoKoshka [18]3 years ago
4 0

Hi! took the quiz, it's associative properties

cluponka [151]3 years ago
3 0

HI Thank you for the answer it was right and I got an A on my math test thank you so much!

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a car traveling at 30 m/s starts to decelerate steadily. it comes to a complete stop in 12 seconds. what is its acceleration?
creativ13 [48]
Just divide -30 m/s (the change in velocity) by 12 seconds (the time required for the car to come to a stop):

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5 0
3 years ago
The accounting department analyzes the variance of the weekly unit costs reported by two production departments. A sample of 16
Sergio [31]

Answer:

We can conclude that the result is significant and production differ in cost variance.

Step-by-step explanation:

Given :

n1 = 16

n2 = 16

s1² = 5.7

s2² = 2.8

α = 0.10

H0 : σ1² = σ2²

H1 : σ1² ≠ σ2²

The test statistic :

Ftest = s1² / s2² =

Ftest = 5.7 / 2.8

Ftest = 2.036

Using the Pvalue from Fratio calculator :

df numerator = 16 - 1 = 15

df denominator = 16 - 1 = 15

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Pvalue = 0.0898

Since the Pvalue is < α ; We can conclude that the result is significant and production differ in cost variance.

3 0
3 years ago
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