2x + y - z = -8 2y + 3z = -6
-1/2x + y + z = -4

For the following matrix, which of the following matrix operations would result in a11 = 1?

A) Multiply row 2 by -1 and add it to row 1

B) Multiply row 3 by -4 and add it to row 1.

C) Multiply row 1 by -1/2

D) Multiply row 1 by 1/2

(a) common ratio in the given sequence is, 3

(b) push ups will do kendall do on the 20th week

step-by-step explanation:

geometric sequence is a sequence of numbers that follows a pattern were the next term is found by multiplying by a constant called the common ratio(r)

(a)

given the sequence: 6 , 18 , 54 , 162 ,

this sequence is geometric sequence where each term is 3 times the previous term.

therefore,

common ratio(r) = 3.

(b)

a formula for nth term of geometric sequence is given by;

,   where r is the common ratio between the successive terms and is the first term,

to find how many push ups will kendall do on the 20th week.

here. n = 20th term.

in the given sequence first term

then;

simplify:

therefore, push ups will do kendall do on the 20th week

you can use a^2+ b^2=c^2