108 = -12 + -4(-5n + 7)
108 = -12 + (7 * -4 + -5n * -4)
108 = -12 + (-28 + 20n)
108 = -40 + 20n
-20n = -40 + -108
-20n = -148
n = 7.4
Answer:
28
Step-by-step explanation:
Circumference = 2*pi*r
r = 1/2*diameter = 4.5
pi = 3.14
Circumference = 2*(3.14)*(4.5) = 28.26 = 28
okay so
117° + angle a = 180° (supplementary angle)
angle a = 180 - 117
= 63°
then angle a + angle b + 81° = 180° ( angle sum property)
so... 63° + angle b + 81° = 180
144 + angle b = 180°
angle b = 180 - 144
= 36°
hope this helps.
Answer:
-1
Step-by-step explanation:
You can find the average my finding the sum of all temperatures and then dividing it by the number of temperatures ( in this case 7)
So you get (-3-5+3+7-2-2-5)/7=-7/7=-1
