What is this number in standard form?

(8×10)+(2×1100)+(9×11,000)

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3

Recall that two angles are complementary if the sum of their measures is? 90°. find the measures of two complementary angles if one angle is twenty dash nine times the other angle.