First, find the mean. You'll need it to compute the variance.

The variance of the sample is then computed with the formula

The standard deviation is the square root of the variance, so
Answer:
Step-by-step explanation:
<u>Given:</u>
- Borrowed amount P = Rs 100000
- Time t = 3 years
- Number of compounds n = 3
- Interest I = Rs 33100
- Rate r = ?
<u>Use formula:</u>
<u>Substitute values and solve for r:</u>
- 33100 = 100000(1 + r)³ - 100000
- 133100 = 100000(1 + r)³
- (1 + r)³ = 133100/100000
- (1 + r)³ = 1.331
- 1 + r = ∛1.331
- 1 + r = 1.1
- r = 0.1 or 10%
Answer:
$16.20
Step-by-step explanation:
90 x .18 (Turn percent into decimal by moving decimal 2 places left)
$16.20
Answer:
x = -1.8
Step-by-step explanation:
10(-1.8) - 2 = -18 - 2 = -20
so X = -1.8