Question

Check these please?!

Answer 1

@haleyelizabeth2017

Answer 2

@Michele_Laino

Answer 3

the sequence of numbers:
22, 17.6, 14.05 are a geometric series, whise constant is:
\(17.6/22=14.05/22=0.8\)
so the first square whose length is \(10\) inches, will be such that:
\[10 = 22 \cdot {0.8^{\left( {n - 1} \right)}}\]
please solve for \(n\)

Answer 4

oops.. I meant \(17.6/22=14.05/17.6=0.8\)

Answer 5

Oh wow.. so thats the first one? how about the second and third.

Answer 6

n is aprprox 4.53

Answer 7

numbers:
\(-4,2,8,...\) are an arithmetic series, whose constant is \(d=2-(-4)=8-2=6\)
so the 50th term is:
\[{a_{50}} = {a_1} + \left( {50 - 1} \right)d = - 4 + \left( {49 \times 6} \right) = ...?\]

Answer 8

290

Answer 9

finally third question:
the sequence
\(-4,8,-16,32,...\) ia a geometric sequence, whose first term is \(-4\) and the constant is \(2\), so the 20ty term is given by the subsequent computation:
\[{a_{20}} = {a_1} \cdot {q^{\left( {20 - 1} \right)}} = - 4 \cdot {2^{18}} = ...\]

Answer 10

-1048546 ??