N = -9
8(-7+n) = -128
Divide both sides by 8
-7 + n = -16
Add 7 to both sides
n = -9
Solution
Part A
The general form of the n-th term = a + (n-1)d
Here we are given the 8th term A8 = 28
, common difference (d) = 6
A8 = a + (n - 1) 6
28 = a + (8- 1)6
28 = a + 7*6
28 = a + 42
a = 28 - 42
a = -14
Part B
n-th term is 760. a = -14 and d = 6.
Plugging in the values in the general form, we get
760 = -14 + (n -1)6
760 = -14 + 6n - 6
760 = -20 + 6n
6n = 760 + 20
6n = 780
Dividing both sides by 6, we get
n = 780/6 = 130
The value of n is 130
1) 1 Quarter, 2 Dimes, 2 Nickles, 10 Pennies
2) The ninth floor is 3 times as far from the ground as the third (9/3)
3) That number is 20 (20/2 = 10, 20*2 = 40, 40-10 = 30)
4) 1 Bracelet is $9 (If 2 rings are $12 then 1 ring will be $6. $36 - $18 = $18 2 bracelets = $18)
5) Addie weighs 4oz Missy weighs 14oz Corky weighs 8oz(A + M = 18, M + C = 22, A + C = 12. )
don't expect people to do 6 questions for the points of 1 question.
Answer:
$14
Step-by-step explanation:
The necklaces cost $8, so two would be $8+$8=$16
Now do the original $30 minus the $16 dollars spent
You now have $14 left.
9514 1404 393
Answer:
8
Step-by-step explanation:
The formula for the number of degrees in the sum of the interior angles of an n-sided polygon is ...
sum of angles = 180°(n -2)
Filling in the given value and solving for n, we get ...
1080 = 180(n -2)
6 = n -2 . . . . . . divide by 180
8 = n . . . . . . . . add 2
The polygon has 8 sides.