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Aleks04 [339]
3 years ago
5

Aileen deposited money into an account in which interest is compounded semiannually at a rate of 2.1%. How much did she deposit

if the total amount in her account after 3 years was $3952.08, and she made no other deposits or withdrawals.
a. $3489
b. $3562
c. $3712
d. $3751
Mathematics
2 answers:
anastassius [24]3 years ago
6 0
The answer is c)3712

Gnoma [55]3 years ago
5 0
P=A/(1+i/m)^mn
P=3,952.08÷(1+0.021÷2)^(2×3)
P=3,711.9
P=3712
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Section 5.2 Problem 19:
rjkz [21]

Answer:

y(x)=2xe^{3x} (See attached graph)

Step-by-step explanation:

To solve a second-order homogeneous differential equation, we need to substitute each term with the auxiliary equation am^2+bm+c=0 where the values of m are the roots:

y''-6y'+9y=0\\\\m^2-6m+9=0\\\\(m-3)^2=0\\\\m-3=0\\\\m=3

Since the values of m are equal real roots, then the general solution is y(x)=C_1e^{m_1x}+C_2xe^{m_1x}.

Thus, the general solution for our given differential equation is y(x)=C_1e^{3x}+C_2xe^{3x}.

To account for both initial conditions, take the derivative of y(x), thus, y'(x)=3C_1e^{3x}+C_2e^{3x}+3C_2xe^{3x}

Now, we can create our system of equations given our initial conditions:

y(x)=C_1e^{3x}+C_2xe^{3x}\\ \\y(0)=C_1e^{3(0)}+\frac{C_2}{6}(0)e^{3(0)}=0\\ \\C_1=0

y'(x)=3C_1e^{3x}+C_2e^{3x}+3C_2xe^{3x}\\\\y'(0)=3C_1e^{3(0)}+C_2e^{3(0)}+3C_2(0)e^{3(0)}=2\\\\3C_1+C_2=2

We then solve the system of equations, which becomes easy since we already know that C_1=0:

3C_1+C_2=2\\\\3(0)+C_2=2\\\\C_2=2

Thus, our final solution is:

y(x)=C_1e^{3x}+C_2xe^{3x}\\\\y(x)=2xe^{3x}

3 0
2 years ago
Which of the following best describes the squaring property of equality?
Brilliant_brown [7]
The squaring property of equality simply states that if two values are equal, then the squares of both of the values will also be equal. For example,
if A = B, then
A² = B² is also true.
4 0
4 years ago
Which of the following is a solution to the inequality below?
Leni [432]

Answer:

m < - 6.4

Step-by-step explanation:

- 4 + 10m < - 68 ( add 4 to both sides )

10m < - 64 ( divide both sides by 10 )

m < - 6.4

3 0
3 years ago
Read 2 more answers
Twenty-four percent of the 25 swim team members are new on the team. How many members are new?
mrs_skeptik [129]
Change 25% to a decimal
0.25x25=6.25
so around 6 members r new
7 0
3 years ago
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4. The table below shows the cost of pencils at the local discount store. Cost of Pencils Number of Total Cost Pencils 10 $1.25
fomenos

Answer:

1.25 / 10 = 0.125

0.125 is about 0.13

13 cents or $0.13

4 0
3 years ago
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