X + y = 12 . . . . . . . . (1)
x - 3y = -30 . . . . . . . (2)
(1) - (2): 4y = 42
y = 10.5
When dealing with a pool of data, the field of study is called statistics. This refers to the study of sample data and how they correlate it with the overall trend of the population. By doing this, they use terms that can best represent the sample data. These three are the most common:
1. Mean - this is the arithmetic average of the data
Mean = (<span>8+41+25+9+22+36+24+13+25+28)/10 = 23.1
2. Mode - this is the most frequent data point that can occur. In this case, the mode is 25 because it occurred twice.
3. Median - this is the middle of the sample data arranging it from least to greatest. In this case: 8, 9, 13, 22, 24, 25, 25, 28, 36, 41. The middle number is 25. Thus, the median is 25.</span>
Answer:
228,710.84 frws
Step-by-step explanation:
A trader banks 250000frws at 9%per year compound interest rate calculated every 4 months. find the amount in the bank at the start of the year?
The above question is asking us to find the Principal. The formula is given as:
P = A / (1 + r/n)^nt
A = Amount after time t = 250000
r = Interest rate = 9%
n = Compounding frequency = 4
t = time = 1 year
First, convert R as a percent to r as a decimal
r = R/100
r = 9/100
r = 0.09 per year,
Then, solve the equation for P
P = A / (1 + r/n)^nt
P = 250,000.00 / (1 + 0.09/4)^(4)(1)
P = 250,000.00 / (1 + 0.0225)^(4)
P = $228,710.84
The bank started with 228,710.84frws
Answer:
its 12
Step-by-step explanation:
Answer:
x = 1/y
Step-by-step explanation: