-7 2/3 + (-5 1/2) + 8 3/4 =
A.-21 11/12
B.-4 5/12
C. -4 2/4
D. 6 7/12

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

The trigonometric ratios sine and secant are reciprocals of each other

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25