A = P(1+r)^t
A = amount made after the specified time
P = original amount of money
r = rate
t = time
2500 = 1800 (1 + r)^2
2500/1800=(1800(1+r)^2)/1800
1.3888 = (1+r)^2
1.17851 = (1 +r)
1.17851 - 1 = r
Rate = .17851
Answer:
b
Step-by-step explanation:
Answer:
1. 14%
2. 98%
3. 52%
4. 13%
5. 39%
6. 28%
7. 20%
8. 37%
9. 17%
10. 19%
Step-by-step explanation:
To get a percentage divide the small number by the big number and then multiply by 100.
1. 28/200 = 0.14 * 100 = 14
2. 931/950 = 0.98 * 100 = 98
3. 364/700 = 0.52 * 100 = 52
4. 13/100 = 0.13 * 100 = 13
5. 273/700 = 0.39 * 100 = 39
6. 161/575 = 0.28 *100 = 28
7. 200/1000 = 0.2 * 100 = 20
8. 68/400 = 0.37 * 100 = 37
9. 68/400 = 0.17 * 100 = 17
10. 95/500 = 0.19 * 100 = 19
The value of W when V = 9 is 405
<h3>How to solve for W?</h3>
The variation is a direct variation from W to V^2.
This means that:
W = kV^2
Where k is the constant of variation.
W = 320 when V = 8 means that:
320 = k * 8^2
Evaluate
320 = 64k
Divide both sides by 64
k = 5
Substitute k = 5 in W = kV^2
W = 5V^2
When V = 9, we have:
W = 5 * 9^2
Evaluate
W = 405
Hence, the value of W when V = 9 is 405
Read more about direct variation at:
brainly.com/question/6499629
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