Sum is addition, less than is subtraction, equals is is, division is of and multiplication is per
Answer:
Step-by-step explanation:
The arithmetic sequence has the form:
When a=10.31, n=9, we substitute to get:
Similarly, when n=13 and a=11.71, we get:
Subtract equation 1 from equation 2 to get:
This implies that
Substitute into the second equation to get:
Solve to get
Hence the explicit formula is:
Answer:
16 days
Step-by-step explanation:
OK, The pet snail only moves a foot per day because at night it falls again, SO ima going with 16 days.
A worker is paid $0.10 on the first day, $0.30 on the second day, $0.90 on the third day, $2.70 on the fourth day, and so on.
Notice that the pattern of getting wages is 3 times of the previous day.
Like the wages for the first day= 0.10
Second day = 0.10*3 = 0.30
Third day = 0.30 *3 = 0.90 And so on.
Hence the wages represent a geometric sequence where
first term: a = 0.10 and common ratio: r = 3.
And we need to find the total does the worker earn after working 14 days:.
Formula to find the sum of nth term a geometric sequence is:
=
=
=
=
= 239148.4
So, he will earn $239148.40 fter 14 days.
Hope this helps you.
Answer:
6x+3
=3(2x+1)
Step-by-step explanation:
hope this help you
have a great day