Calculate aa and then b. is matrix multiplication comutative?
a. a = 2 0
−2 3
, b = 5
0 1

b. a = −10 1
3 7
, b = −3 2
4 −1

Trigonometry hellllllpppppppp asap

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

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane