Answer:
multiply one or both of the equations until a variable can cancel out
Answer:
4. About 2,700 in2
Step-by-step explanation:
The area of a circle (), measured in square inches, is directly proportional to the square of its diameter (), measured in inches. That is:
Where is the constant of proportionality, dimensionless.
In consequence, the following relationship between circles A and B is obtained:
The area of the circle B is now cleared:
Given that , and , then:
Therefore, the correct answer is 4.
Answer:
B. $5039.58
Step-by-step explanation:
compound interest formula: amount = p(1 + \frac{r}{n})^{nt}
p= principal ($2,300)
r= interest rate as a decimal (4% = 0.04)
n= number of times the principal is compounded per year (annually = onceper year so 1 time per year)
t= time in years (20 years)
new equation: amount = 2300(1+\frac{0.04}{1} )^{1*20}
That equation equals $2,739.58 which you add to the principal.
$2,739.58 + $2,300 = $5039.58
hope this helps :)