Answer:
Step-by-step explanation:
the general equation of a circle is
with (h,k) being the centre of the circle and r the radius
It’s rational because the square root of 0.49 is 0.7
Answer:
LCD = 60
<em>BRAINLIEST, PLEASE!</em>
Step-by-step explanation:
All of the denominator numbers are multiples of 60, and since 60 is also equal to the largest denominator number, it's the LCD.
Answer:
z = -0.57
Step-by-step explanation:
A z-score indicates how much away is something from the mean so it can be more(above) than the mean or less(below) than the mean.
sampling distribution mean = 0.03
standard error = 0.007
researcher's sample mean = 0.026
z = (0.026 - 0.03)/0.007
z = (-0.004)/0.007
z = -0.57
So that means the researcher's sample mean is 0.57 standard deviation below the sampling distribution mean.
The negative sign above is the indicator of below the mean value.
Answer:
see explanation
Step-by-step explanation:
Not sure quite what you are asking, but
Using the trigonometric identity
cos² x = 1 - sin²x, then
cos²x - sin²x
= 1 - sin²x - sin²x
= 1 - 2sin²x
Thus
cos²30° - sin²30° = 1 - 2sin²30°
