Solve the following linear systems by Gauss elimination. Note if partial pivoting is necessary. Show all steps. If no solution or more than one solution exists, explain your reasoning. a) 15.3x1 − 8.3x2 = 20.2 −3.8x1 + 2.1x2 = −5.2 b) 8x1 + 8x2 + 4x3 = 0 3x1 − x2 + 2x3 = 0 5x1 + 9x2 + 2x3 = 0 2. Solve system by the Gauss

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

the answer is

a.

x = 42

y = 10

i got it down chief.

answer:   he will receive $21093.75 only.

explanation:

since we have given that

cost of house = $180,000

since he has a coinsurance clause of 75%,i.e. he does not fully insured his property.

amount the owner insured for the property = $101,250.

amount he lost in damage = $50,000

amount he will receive from insurance is given by

so, he will receive $21093.75 only.