See the figure attached to better understand the problem
we now that
in the triangle ABC
tan alfa=126/120----------> 1.05
alfa=arctan (1.05)-------> alfa=46.40°
in the triangle ADC
sin alfa=DC/120----------> DC=sin(46.40°)*120---------> DC=86.90 units
the answer is 86.9 units
Question
a) What is the decay factor?
b) What is the percent decrease?
c) Estimate the number of black and white TV's sold in 1999.
Answer:
a. Decay factor = 0.85
b. Percent decrease = 15%
c. 19.363 million TVs were sold
Step-by-step explanation:
Given
Solving (a): The decay factor
An exponential function has the form
Where b is:
By comparison:
Solving (b): Percentage decrease:
Percentage decrease P is calculated as follows:
Substitute 0.85 for b
Convert to percentage
Solving (c): TVs sold in 1999
First, we need to determine the value of t for 1999
In 1997, t= 0
In 1998, t= 1
In 1999, t= 2
So, we substitute 2 for t in:
Complete question :
The Hiking Club is taking another trip. The hike leader's watch shows that they gained 296 feet in altitude from their starting position. Their altitude is now 285 feet, but there is no record of their starting altitude. Write and solve an equation to represent this situation and find their starting altitude.
Answer:
Expression :
285 = x + 296
Starting altitude, x = - 11 feets
Step-by-step explanation:
Let starting position = x
Altitude gained = 296 feets
Final attitude = 285 feets
The starting altitude could be obtained by the expression :
Final altitude = starting altitude + Altitude gained
285 = x + 296
Solve for x, to obtain starting altitude ;
285 - 296 = x + 296 - 296
-11 = x
Hence, starting altitude is - 11 feets
Answer:
A
Step-by-step explanation:
Domain here is where arrows begin. So, domain of this function is {4,5,6,8,9}.
Answer : A.
Answer:
About 39,402.
Step-by-step explanation:
You need to find the 46% of black cars.