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Arte-miy333 [17]
3 years ago
7

Read and write the number 500,8000 in two other forms

Mathematics
1 answer:
fiasKO [112]3 years ago
3 0
Five-hundred thousand and eight-hundred.
500,000+800
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The wall street journal corporate perceptions study 2011 surveyed readers and asked how each rated the quality of management and
malfutka [58]

Answer:

Hello some parts of your question is missing below is the missing part

answer : A) p-value =  0.0019 ,

The level of significance ( 0.05 ) > p-value ( 0.0019 )

B) There is no dependence between the two ratings

Step-by-step explanation:

A) using a 0.05 level of significance and test for independence of the quality of management

Test statistic : X^{2}  ∑ ( Oi - Ei )^2 / Ei

= [(40-35)^2 / 35 ] +  [(25-24.5)^2 / 24.5 ] +  [(5-10.5)^2 / 10.5]  +  [(35-40)^2 / 40]  +  [(35-28)^2 / 28]  +  [(10-12)^2 / 12]  +   [ (25-25)^2 / 25 ]  +  [(10-17.5)^2 / 17.5 ]  + [(15-7.5)^2 / 7.5]  =  17.03  

p-value = 0.0019

Df = 4  ,

The level of significance ( 0.05 ) > p-value ( 0.0019 )

B) There is no dependence between the two ratings

4 0
3 years ago
Which of the following sets of ordered pairs does NOT describe a function?
Sophie [7]
C because one x-value can ONLY have one corresponding y-value. It cannot have more than one.
8 0
3 years ago
Verify the identity. <br><br>cot. (x - (pi/2)) = -tan x<br><br>Please, help me!!!
Leya [2.2K]

Answer:

cot . (x- π/2)= - tanx

Step-by-step explanation:

cot . (x- π/2)= - tanx

cot .x - cot π/2= - tanx

cot π/2= 1/tanπ/2

But tan π/2= ∞

cot π/2 = 1/∞= 0

cotx - 0= - tanx

cot x = - tanx

cosx/sinx= - sinx/cosx             Putting values of cot and tan

cosx/ sinx ( sinx/cos x) = -sinx/cos x  (sinx/cos x )  

Multiplying both sides with  sinx/cos x    

1= - sin²x/cos²x

cos²x= - sin²x                 as cosx = -sinx

5 0
3 years ago
Here is an addition sentence.
dexar [7]
B because in commutative property of addition the numbers switch but they do not change the sign nor the numbers. hope this helped
5 0
4 years ago
Read 2 more answers
g Explain the difference between explanatory and response variables. Is it important to distinguish between the two in linear re
sukhopar [10]

Answer: See explanation

Step-by-step explanation:

The response variable is the variable that the researcher is interested in. It is what the experiment really focuses on.

An explanatory variable is the variable that is being manipulated by the researcher and it explains the variations that may occur to the response variable.

It should also be noted that it is important to distinguish between the response variable and the explanatory variable in a linear regression.

4 0
3 years ago
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