Answer:
5
Step-by-step explanation:
The 6th term of an arithmetic progression is 35 and the 13th term is 77. find the 1st term
We know we have an arithmetic sequence.
a_n = (n - 1)*d + a_1
given:
a_6 = 35 = (6-1)*d + a_1
a_13 = (13 -1)*d + a_1 = 77
find a_1
we have 35 = 5d + a_1
and 77 = 12d + a_1
2 equations in 2 unknowns.
We can solve this.
77 = 12d + a_1
35 = 5d + a_1
minus the 2 equations from each other.
77 - 35 = 12d - 5d + a_1 - a_1
42 = 7d
d = 6
Find a_1
35 = 5*6 + a_1
35 = 30 + a_1
a_1 = 35 -30 = 5
a_1 = 5
Answer:
3r^3-27r, the main thing that is gonna help you to solve for this is by using FOIL.
Answer:
6.071
Step-by-step explanation:
All non zero numbers are significant irrespective of where decimal point is
If zero is between to numbers it is significant irrespective of where decimal point is
The sides could be 10.2 inches or 15.7 inches.
See the attached picture for the equations:
Answer:
They are all in slope and intercept form already
Step-by-step explanation:
