Answer:
it is the last answer
Step-by-step explanation:
The value of r in the exponential decay function 7000 = 20000(1-r)^10 is 10%
<h3>How to solve for r as a percentage?</h3>
The equation is given as:
7000 = 20000(1-r)^10
The above equation is an exponential decay function.
So, we have:
7000 = 20000(1-r)^10
Divide both sides of the equation by 20000
0.35 = (1-r)^10
Take the 10th root of both sides
0.35^(1/10) = 1 - r
Evaluate the exponent
0.9 = 1 - r
Add r to both sides
0.9 + r = 1
Subtract 0.9 from both sides
r = 1 - 0.9
Evaluate
r = 0.1
Express as percentage
r = 10%
Hence, the value of r in the exponential decay function 7000 = 20000(1-r)^10 is 10%
Read more about exponential decay function at:
brainly.com/question/27822382
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Photomath i use it for my math all the time it gives you the option for how you wanna solve it and shows you how to solve it
Answer:
x ≈ 36.1
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan61° = 
= 
( multiply both sides by 20 )
20 × tan61° = x , then
x ≈ 36.1 ( to the nearest tenth )
