Rewrite the (numerical) matrix equation below in symbolic form as a vector equation, using symbols v1,v2,…v 1 ,v 2 ,… for the vectors and c1,c2,…c 1 ,c 2 ,… for scalars. Define what each symbol represents, using the data given in the matrix equation. [−35−497581−2−4][−324−12]=[8−1][ −3 5 5 8 −4 1 9 −2 7 − ] −3 2 4 −1 2⎦=[ 8 −1 ]

99 points at a zoo, the leopard pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle with a radius of 12 m. the inner edge of the sidewalk is a circle with a radius of 8 m. (1 point for showing all of your work) a. write and simplify an expression for the exact area of the sidewalk. (1 point for the answer) b. find the approximate area of the sidewalk. use 3.14 to approximate π. (1 point for the answer)

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15