Mark you Brainliest If x1, x2, x3, ..., x8 are the roots of the eighth-degree polynomial, 2x^8+bx^7+cx^6+dx^5+ex^4+fx^3+gx^2+ hx+m,

find the value of b when:

x1 + x2 + x3 = 6

x2 + x3 + x4 = 18

x3 + x4 + x5 = 9

x4 + x5 + x6 = −3

x5 + x6 + x7 = −9

x6 + x7 + x8 = −6

x7 + x8 + x1 = −2

x8 + x1 + x2 = 2

99

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

answer: 5 17/33 % (to the tenth)

step-by-step explanation:

he guessed: 34.5 pounds

actual weight is 32.7

there for he is off:

34.5 -32.7 = 1.8

32.7 is the 100%

1.8 represents %? of 32.7

therefore:

32.7   - 100%

1.8     -     x%

x= 1.8*100%/32.7% = 18*100%/327%

x=1800%/327%   = (5 165/327)%

to the tenth:

5 17/33 %