Remember that there are always 360 degrees in a full circle. Since 
(it is a right angle), we can find:
Substituting in the values provided in the problem into our equation gives us:
Given this, we can find the 
:
Answer:Compare the constants of the two variables.
changed at the same rate, or by the same factor, then they are directly proportional. For example, since the x-coordinates changed by a factor of 2 while the y-coordinates also changed by a factor of 2, the two variables are directly proportional.
Step-by-step explanation:
Answer:
1) $4400
2) $4400
Step-by-step explanation:
Let
X = price in first year
Y = price in 2nd year
Z = price in 3rd year
A = price in the end of 3rd year
Y = 1.1 X
Z = 0.8 Y
substitute Y into Z get Z = 0.88 X
A = 1.25 Z= 1.25(0.88X) = 1.1 X
1)
(125/100) Z = 22000
Z = 22000 x 100 / 125 = 17600
Z = 0.8Y
Y = Z/0.8 = 1.25Z
Amount of dollar decrease in 2nd year = Y - Z
= 1.25Z - Z = 0.25Z = 0.25 x 17600 = 4400 dollar
2)
Decrease in price over first 2 years = Increase in property in 3rd year - 2000
Hence, X - Z = (A-Z) - 2000
X - 0.8X = 1.1 X - 0.88 X - 2000
X - 0.88X - 1.1X + 088X = -2000
-0.1 X = -2000
0.1 X = 2000
X = 20000
Amount of dollar decrease during 2nd year = Y - Z = 1.1X - 0.88X = 0.22X
= (0.22) x (20000) = 4400 dollars
Answer:
x = 9
Step-by-step explanation:
3x - 7 = 20
3x = 20 + 7
3x = 27
x = 9
Answer:
I do not understand very well but they are already helping me
