Answer:
(b) After 8 years, the savings account has $255.32
Step-by-step explanation:
Given
---- initial (i.e. when t = 0)
Solving (a): Model the situation
For growth, an exponential function is represented as:
This gives:
Solving (b): The solution to (a)
We have:
Express percentage as decimal
Can you show the question?
18 - 7x = -20.5
Subtract 18 from each side:
-7x = -38.5
Divide both sides by -7:
x = -38.5 / -7
x = -5.5 = 5 1/2
The answer is D.
Answer:
eqaul to
Step-by-step explanation:
1. You have that:
-<span>Each blade on a windmill is in the shape of a triangle.
- The triangle has the following dimensions: the base is 7 feet and the height is 4 feet.
- There are four blazer on the windmill.
</span>
2. Then, to solve this problem, you must apply the formula for calculate the area of a triangle, which is:
A=bxh/2
b is the base of the triangle (b=7 feet)
h is the height of the trianlge (h=4 feet)
3. Therefore, you have:
A=bxh/2
A=(7 feet)(4 feet)/2
A=28 feet²/2
A=14 feet²
4. The total area is:
At=Ax4
At=(14 feet²)(4)
At=56 feet²