Answer:
Option b is correct 175
Step-by-step explanation:
n = 7
k = 6
3k -2 ------1
put k = 6 in above eq. for finding first term
a1 = 3(6) - 2 = 18 - 2 = 16
put k = 7 in above eq. for finding first term
a2 = 3(7) - 2 = 21 - 2 = 19
a3 = 3 (8) - 2 = 24 - 2 = 22
16, 19 , 22, ... //Arithmetic series formation
a1 = 16 , a2 = 19
d = a2 - a1 = 19 - 16 = 3 //Difference of first two terms
Using sum forumula for arithmetic series
sum = 
= 
= 
= 
= 
= 7 * 25
= 175
Answer:
10 x 4
Step-by-step explanation:
what factors are there for 40?
1, 2, 5, 8, 10, 20, 40
A rectangle has 2 equal long sides and 2 equal short sides. The area is the short times the long.
10 plus 10 and 4 plus 4 equals 28. 4 x 10 equals 40.
Answer:
#1. 5x - 24
#2. 10x - 1
#3. 10x -14
#4. 6x - 12
#5. 3x63 + 5x^2 - 3
#6. 12a + 43
#7. -7x + 5y + 28
#8. 3x + 3(not sure about the last exponent because It was really blury to see :/
Step-by-step explanation:
Sorry I cant do the last because I have to now :) I will try to answer it next time if It isn't already answered :)
bro i'm not too sure we can help you with this..
