Mary decreased her time for the mile walk from 30 minutes to 24 minutes. What was the percent of decrease? A. 32%
B. 20% increase
C. 20% decrease
D 88%

Which of the following expressions cannot be simplified to x – 2?

Write the component forms of vectors u and v, shown in the graph, and find v − 2u. u= (< -3, -2> , < -3, -1> , < -2, -2> , < -2, -1> ) v= (< -5, 1> , -4, 0> , < 0, -4> , < 1, -5> ) v-2u= (< 5, 3> , < 0, 4> , < 4, 0> , < 5, -3>

The base of a pyramid is a square with 5 lines of 5cm the slant height of each lateral face of the pyramid is 6 cm what is the surface area of the pyramid