If quadrilateral abcd rotates 90° counterclockwise about the origin, what are the coordinates of a' in quadrilateral a'bcd?
o a. (2, 1)
b. (-2,-1)
c (-2,-2)
d. (-2,0)
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How do i work this problem out using the equation a=pe^rt

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?