Answer:
The first ones area is 35 cm squared
The third ones area is 32 cm squared
Step-by-step explanation:
A=1/2H (B1+B2)
35=2.5(8+6)
32=2(7+9)

notice, all you do is, move the factor from the bottom to the top, or from the top to the bottom, and the sign changes, from negative to positive or the other way around, is all there's on that
Answer:
4/9, or 0.4∞
but 0.4∞ has a repeating decimal, so the expanded form is ∞ also
Answer:
its a)the first sequence is geometric bc of the common ratio of 2. the second sequence is arithmetic bc of the common difference of 7.