6. a group of 28 people
attended the fieldtrip. the
number of teachers on the
fieldtrip was 20 less than
the number of students.
write a system of equations
that describes the number
of teachers, t, and the
number of students, s, that
went on the fieldtrip.

teachers: 8

Students: 20

Step-by-step explanation:

no. of people went on field trip: 28

no. of teachers went with them: 28-20= 8 teachers

no. of student went on fieldtrip: 28-8= 20 students

none of the option is correct.

step-by-step explanation:

it says to find which expression equals 9^3 sqrt 10 = ?

9^3 sqrt 10 = 729 sqrt 10.

checking option a. 5 sqrt 10 + 4 sqrt 10

5 sqrt 10 + 4 sqrt 10

= 9 sqrt 10.

checking option b. 5^3 sqrt 10 + 4^3 sqrt 10

5^3 sqrt 10 + 4^3 sqrt 10

= 125 sqrt 10 + 64 sqrt 10

= 189 sqrt 10.

checking option c. 5 sqrt 10 + 4^3 sqrt 10

5 sqrt 10 + 4^3 sqrt 10

= 5 sqrt 10 + 64 sqrt 10

= 69 sqrt 10.

checking option d. 5^3 sqrt 10 + 4 sqrt 10

5^3 sqrt 10 + 4 sqrt 10

= 125 sqrt 10 + 4 sqrt 10

= 129 sqrt 10.

hence, none of the option is correct.

2x^2+5x+17

your welcome. : )