(x - h)^2 + (y - k)^2 = r^2
h = -2
k = -2
r = 6
(x - (-2))^2 + (y - (-2))^2 = 6^2
(x + 2)^2 + (y + 2)^2 = 6^2
(x + 2)^2 + (y + 2)^2 = 36. your answer
hope this helped, blessings! :)
Answer: domain: all nonzero real numbers
range: all nonzero real numbers
Step-by-step explanation:
The slope is 7 and the y intercept is (0,1/2):)
The shape of the distribution, is symmetric, is the best description of statistics about scores.
<h3 /><h3>What is standard deviation ?</h3>
The standard deviation is the positive square root of the variance of this data set. Variance of a data set is the sum of squared differences of the data values from its mean to the total count of data values.
The given data in the problem is;
Mean = 78%
Standard deviation = 4%
Min = 64
Median = 78
Q1 = 72
Q3 = 84
Max = 99
The condition for the symmetric distribution is found as;

From the data we have;

So that ,
.
Hence, the condition of symmetry is followed.
To learn more about the symmetry, refer to the link;l
brainly.com/question/15970176
#SPJ2
Answer:
60°
Step-by-step explanation:
sum of interior angles of quadrilateral is 360°
∠C = 70°
∠D = 50°
∠C + ∠D = 120°
∴ ∠A + ∠B = 360° - 120° =240°
AO and BO bisect ∠A and ∠B
∠OAB + ∠OBA = 1/2 x ( ∠A + ∠B) = 120°
∠AOB = 180° - (∠OAB + ∠OBA) = 180° - 120° = 60°