Given the
function f(x) = 10000(0.73)^x
<span>Where y
is The value of a boat, in dollars, </span>
<span>x
years after its purchase </span>
at x = 1
f(1) = 10000(0.73)^1
f(1) = $7300
at x = 2
f(2) = 10000(0.73)^2
f(2) = $ 5329
so the decrease
D = $7300 - $ 5329
D = $ 1971
<span> </span>
Answer:
Option A and Option C
Step-by-step explanation:
The surface area of a cone can be calculated with this formula:
(This matches with the option A)
Where
is the lateral area of the cone (Being "s" the slant height) and
is the area of the base of the cone (which is a circle).
You know that BA the is the area of the base and LA the lateral area of the cone.
Then, substituting into the formula for calculate the surface area of a cone, you get:

This matches with the option C
Let x be the total number of students.
The total of red + blue = x/4 + x/8
The remaining will be : x - x/4 -x/8
But we know the green at 3/5 of the remaining, so the green = 3/5(x - x/4 -x/8)
We also know that 3/5(x - x/4 -x/8) = 15
Solve this equation: and you will find x = 40 (number of students)
Answer:
130
Step-by-step explanation:
26/2 = 13
10 x 13 = 130
Answer:
Variance = 4.68
Step-by-step explanation:
The formula for the variance is:

Where:

The mean can be calculated as each value multiplied by its probability


Replacing the mean and the summatory of X:
