4x+1+57=90
4x+58=90
4x=32
X=8
ANSWER
EXPLANATION
We want to find the number of years that it will take the population to double.
To do this, we have to apply the exponential growth function:
where y = final value
a = initial value
r = rate of growth
t = time (in years)
For the population to double, it means that the final value must be 2 times the initial value:
Substitute the given values into the function above:
To solve further, convert the function from an exponential function to a logarithmic function as follows:
Solve for t:
It will take 9 years for the population to double.
The distance between the two is 10
Based on the information given the rate of return is 10.8%.
First step is to find the shares of stock price:
Shares of stock price=25 shares×$30/share
Shares of stock price= $750
Second step is to calculate the total sold price:
Total sold price= $825+$6
Total sold price= $831
Third step is to calculate the Rate of return:
Rate of return=$831-750/$750×100
Rate of return=$81/$750×100
Rate of return=10.8%
Inconclusion the rate of return is 10.8%.
Learn more about rate of return here:brainly.com/question/21691170
Answer:
The circumference is 155.49 unit
Step-by-step explanation:
First we need to know the formulas of the area and the perimeter
π = 3.14
a = 1926.5 u²
a = π * r²
p = 2 π * r
First we have to clear the r
a = π * r²
r = √(a * π)
r = √(1926.5 / 3.14)
r = √613.535
r = 24.76
Now that we got r we can calculated the perimeter
p = 2 π * r
p = 2 * 3.14 * 24.76
p = 155.49
