Algebra I am having a major brain fart

9)The nth term of an arithmetic sequence with first term a1 and common difference d is given by fn=a1+(n-1)d, where n is a positive integer.

fn=a1+(n-1)d

fn=0+(n-1)3

fn=3n-3

This function is Nonproportional.

check to see if (0,0) is on the graph.

fn=3n-3

0=3(0)-3

0=0-3

0=-3

10) an=a1+(n-1)d

an=-4+(n-1)(4)

an=-4+4n-4

an=4n-8

This function is Nonproportional

check to see if (0,0) is on the graph.

4(0)-8=-8

So, the line does not contain (0,0)

11) The equation is Y=2.25x+2.50.

12)

A) An=a1+(n-1)d

an=1.65+(n-1)1.65

an=1.65+1.65n-1.65

an=1.65n.

B)As the number of hours increases from hour to hour the inches of snowfall also increases at a constant rate. This means that the relation is proportional.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.