Answer:
Step-by-step explanation:
This is an Arithmetic Series with common difference 4 and first term 3
so the nth term an = 3 + (n -1)4
= 4n - 1.
The sum of n terms
= n/2 (a1 + L)
= n/2(3 + 1671)
= 837n.
There are (1671-3) / 4 + 1 = 418 terms in the series,
so the total value of the series is 837*418
= 349,866.
.
To find the GCF, you have to list all factors of each number and find the first common one.
12 = 1, 2, 3, 4, 6, 12
28 = 1, 2, 4, 7, 14, 28
36 = 1, 2, 3, 4, 6, 9, 12, 18, 36
the GCF of numbers 12, 28, 36 is 4.
hope this helps, God bless!
Answer:
65%
Step-by-step explanation:
Check the picture.
Let BC represent the wall, AC the ladder and AB the distance of the feet of the ladder to the wall.
ABC form a right triangle, with m(B)=90°, m(A)=60° and m(C)=30°.
AB is the side opposite the angle 30°, so the length of AB is half of the length of the hypotenuse AC.
Thus, let |AC|=2x, and |AB|=x.
By the Pythagorean theorem:




thus

the length of the ladder is

feet
Answer:

feet
Answer:7 43/51
Step-by-step explanation: