Answer:
<em>2.5</em>
Step-by-step explanation:
y2 - y1 = top
x2 - x1 = bottom
<em>y2 = -5</em>
<em>y1 = -7.5</em>
<em />
<em>x2 = -2</em>
<em>x1 = -3</em>
<em />
<em />
-5-(-7.5) = 2.5
-2-(-3) = 1
2.5 over 1 = 2.5
Answer:
336
Step-by-step explanation:
10 times 280 over 100 equals 28 time 12 equals 336
Answer:
is number 3
Step-by-step explanation:
see explanation on the attached
hope it helps
Answer: $1114.91
Step-by-step explanation:
The formula for compound interest is

Where
A = final amount
P = initial principal balance (1030 for this)
r = interest rate (0.04 for this)
n = number of times interest applied per time period (2 for this)
t = number of time periods elapsed (2 for this)

This rounds up to $1114.91
Solution: We are given:

Using the empirical rule, we have:
covers 68% of data.
Also the percentage of values below mean = Percentage of values above mean = 50%
Now, let's find the z score for x=20

Therefore, the percentage of values greater than 1 standard deviation above mean 
Expected number of students = 16% of 100 = 16