Answer:
12
Step-by-step explanation:
The sum of the exterior and interior angles = 180°
let x be the measure of the exterior angle then interior angle is 5x and
5x + x = 180
6x = 180 ( divide both sides by 6 )
x = 30
The sum of the exterior angles of a polygon = 360°, thus
number of sides =
= 12
Answer:
B. 144 ÷6 = 24
Step-by-step explanation:
I do not know the step by step explanation so sorry just do the answer
Answer:
, 
Step-by-step explanation:
Let be
, then expression for
and
are, respectively:
and 
2 hr 15 min = 2

hours = 2.25 hours
"how far" means distance ... so distance = rate x time
distance = 56 x 2.25 =
126 miles
"how long" means time ... so using the same formula
168 = 56 x time
divide both sides of the equation by 56 to solve
3 hours = time
A 33 gram sample has k value of .1124
(Actually I think the problem SHOULD be worded: A 33 gram sample has k value of -.1124/days)
See attached graphic:
Half-Life = ln (.5) / k
Half-Life = -.693147 / -.1124/days
Half-Life =
<span>
<span>
<span>
6.1667882562
</span>
</span>
</span>
days
Source:
http://www.1728.org/halflif2.htm