1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cerrena [4.2K]
3 years ago
5

If the nth term of a sequence is 28-3n what is the 7th term?

Mathematics
2 answers:
stira [4]3 years ago
5 0
Erms.
For 3, 9, 27, ... the common ratio is 3 because:
3 X 3 = 9
9 X 3 = 27
So to find the 7th term you can do it two ways:
One way:
3 is the 1st term, 9 is the 2nd term, 27 is the 3rd term so then
4th term: 27 X 3 = 81
5th term: 81 X 3 = 243
6th term: 243 X 3 = 729
7th term: 729 X 3 = 2,187
Another way:
You can use the explicit formula
a
n
=
a
1
⋅
r
n
−
1
, where
a
n
is the nth term,
a
1
is the first term, n is the number of the term, and r is the common ratio
so
a
7
=
3
⋅
3
7
−
1

a
7
=
3
⋅
3
6

a
7
=
3
⋅
729

a
7
=
2
,
187

Both ways get you to the same answer that the 7th term in that geometric sequence is 2, 187 .
expeople1 [14]3 years ago
3 0

Answer:

7

Step-by-step explanation:

28-3(7)

You might be interested in
Please help! Due very soon!
Arada [10]

Answer:

9

6

3

3

6

3

3

multiply

row

18

32

Step-by-step explanation:

The answer to each blank, in order from top to bottom

8 0
3 years ago
2 + 3(3x - 6) = 5(x - 3) + 15 I'm in Algebra 1 and I still can't seem to get this problem, I use Slader to find how to do this b
Wewaii [24]

Answer:

x = 4

Step-by-step explanation:

2 + 3(3x - 6) = 5(x - 3) + 15

Expand the parenthesis:

2 + 9x - 18 = 5x - 15 + 15

Simplify:

9x - 16 = 5x

Subtract 5x from both sides:

4x - 16 = 0

Add 16 to both sides:

4x = 16

Divide both sides by 4:

x = 4

7 0
3 years ago
Median of 3,17,17,11,8,13,5,18
-Dominant- [34]
I believe that the answer is 13
7 0
3 years ago
Read 2 more answers
Blank divided by 6=0.2
mario62 [17]
Just do 6 x 0.2 to reverse the division
So the answer is 1.2

I think
4 0
3 years ago
How do yo work out 9.1 divided by 3575
EastWind [94]
9.1/3575
use long division like this
         _<u>0.</u>_________
3575|91.000000

we find how many of 3575 fit into the 91
it's too big so we go farther
how many 3575 go into 910
too big so we go farther
how many 3575 go into 9100
the answer is 2 so put that in the correct place and mulitply that and put that in the correct place. then we subtract

         _<u>0.</u><u>02</u>_________
3575|91.000000
        -<u>71.50</u>
         19.50
bring down the next number
find how many go into 19.500
the answe ris 5


         _<u>0.</u><u>02</u><u>5</u>_________
3575|91.000000
        -<u>71.50</u>
         19.500
        -<u>17.875</u>
           1.625
          
bring down he next zero ( I fast forward and skip steps for convinience)

                      __
         _<u>0.</u><u>02</u><u>5</u><u>455</u>_________
3575|91.000000
        -<u>71.50</u>
         19.500
        -<u>17.875</u>
           1.6250
          -<u>1.4300</u>
             .19500
            -<u>.17875
</u>                16250
               -14300
and so on untill infinity so the answe ris 0.0254555555555555 (enless fives)
8 0
3 years ago
Other questions:
  • You want to have $35,000 in cash to buy a car 3 years from today. you expect to earn 3.6 percent, compounded annually, on your s
    8·1 answer
  • A first number plus twice a second number is 1. Twice the first number plus the second totals 14. Find the numbers
    5·2 answers
  • The swimming pool and the floor of your gym are similar in size. The pool is 75 feet long by 60 feet wide. What are possible dim
    8·1 answer
  • Rational root theorem
    9·1 answer
  • Any advice Plz...........<br>​
    5·1 answer
  • What is the fifth term in the expansion of (3x - 3y)7?
    11·1 answer
  • Whats the answer for this
    8·2 answers
  • Twice as many as points as bob
    5·1 answer
  • I had $20.00 my mom gave me $10.00 my dad gave me $30.00 my aunt and uncle gave me $100.00 I had another $1.00 how much did I ha
    12·1 answer
  • Find the slope below 4,1 4,-4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!