3/2(x - 10 ) = 1/2 x + 5
expand by using distributive property
3/2 x - 15 = 1/2 x + 5
subtract (1/2 x ) on both sides
x - 15 = 5
add 15 on both sides
x = 20
answer
C. x = 20
The sum of the measures of the angles is 180 degrees.
75 + -5w + 125 + 4w + 85 = 180
Combine like terms.
285 - w = 180
Subtract 285 from both sides.
-w = -105
Divide both sides by -1.
w = 105
Answer:
50 ft above sea level.
Step-by-step explanation:
The exact opposite would just be 50 ft above the starting point.
The general equation of the sine function y=f(x) is defined as
where A is the Amplitude
B represents the frequency of the function with period equals 
C represents the Horizontal shift, For Phase shift= -C/B
D represents the Vertical shift.
The data given that the amplitude of the function A=6
Vertical shift 
Horizontal Shift 
Now plug in 
in the general equation of sine function, we get
Answer: 4 weeks.
Hope this answer helps!
( ps: would give explanation but says it inappropriate or something )
