Answer:
-9
Step-by-step explanation:
2(n+6) -15 = 5n+18
2n + 12 - 15 = 5n + 18
2n - 3 = 5n + 18
2n = 5n + 21
-3n = 21
n = -9
Answer:
<em>- 112 + 100 n</em>
Step-by-step explanation:
= 
+ (n - 1 )d
~~~~~~~
= - 12
d = 100
= - 12 + 100( n - 1 )
= - 12 + 100n - 100
<em>= - 112 + 100 n</em>
Answer: 86,400 feet
Step-by-step explanation: First convert from feet per second to feet per hours by multiplying by 60 twice. 6 f/s = 360 f/min = 21600 f/hour
Next multiply 21600 by 4 = 86400
Answer:
-18/3
Step-by-step explanation:
Answer:
57°
Step-by-step explanation:
Let's assume the measurement of the second angle is x.
so, following the problem
(2x + 9) + x = 180
2x + x = 3x
=> 3x + 9 = 180
=> 3x = 180 - 9
3x = 171
x = 171/3
x = 57°
57° is the smallest angle
