Find the sum of the first 3 terms in the geometric sequence when the first term is 12 and the common ratio is 0.2

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )

If m_b=mzd= 43, find mzc so that quadrilateral abcd is a parallelogram o 86 137 o 129 43 description