All these given roots are contained in option C.
The given equation is :






Roots = 
Hence these lie in between 
Answer:

Step-by-step explanation:

Subtract 57 from both sides:

Divide both sides by 4:

Answer:
The correct option is B.
Step-by-step explanation:
It is given that there is a strong, negative, linear relationship between x and y. where, x is the number of consecutive hours a worker has been assembling chainsaws and y is the number of chainsaws he can produce in an hour.
He finds that 70%of the variation in chainsaws produced per hour can be explained by the regression of y on x.


The slope is -0.7, therefore option B is correct.
18.386 rounded to the nearest hundredth would be 18.39
Angles in a triangle add up to 180 therefore:
Angle CAB = 180 - 60 - 50 = 70
Angles on a straight line add up to 180 therefore the missing angle is:
180 -70 = 110
Answer is D
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