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3 years ago

Help Please give Explanation, I will give brainliest please help NO LINKS OR I WILL REPORT YOU

Mathematics

1 answer:

irina [24]3 years ago

5 0

Answer:

the answer is c none of the above

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72 1/2 x 24 1/2 x 36

Oduvanchick [21]

Answer:

63945

Step-by-step explanation:

6 0

3 years ago

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10. What's the area of the room in this diagram?<br>12 feet<br>13 feet

Tasya [4]

Area = Side x Side meaning it's 12 x 13 = 156

Area = 156

4 0

3 years ago

One month, Henry's grandfather gives him a box of 523 baseball cards. Each month, starting the second month, Henry buys 24 baseb

BaLLatris [955]

Henry's grandfather gives him a box of 523 baseball cards . And starting the second month, each month Henry buys 24 baseball cards to add to this collection.

It means after second month Henry have

$523+24= 547$

After third month , Henry have

$547+24= 571$

After fourth month, Henry have

$571+24= 595$

So after n month, Henry have

$523+(n-1)24 = 523 + 24n -24= 24n +499$

3 0

4 years ago

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A certain college graduate borrows 7864 dollars to buy a car. The lender charges interest at an annual rate of 13%. Assuming tha

White raven [17]

Answer:

Therefore rate of payment = $ 3145.72

Therefore the rate of interest = =$1573.17

Step-by-step explanation:

Consider A represent the balance at time t.

A(0)=$ 7864.

r=13 % =0.13

Rate payment = $k

The balance rate increases by interest (product of interest rate and current balance) and payment rate.

$\frac{dB}{dt} = rB-k$

$\Rightarrow \frac{dB}{dt} - rB=-k$ .......(1)

To solve the equation ,we have to find out the integrating factor.

Here p(t)= the coefficient of B =-r

The integrating factor $=e^{\int p(t) dt$

$=e^{\int (-r)dt$

$=e^{-rt}$

Multiplying the integrating factor the both sides of equation (1)

$e^{-rt}\frac{dB}{dt} -e^{-rt}rB=-ke^{-rt}$

$\Rightarrow e^{-rt}dB - e^{-rt}rBdt=-ke^{-rt}dt$

Integrating both sides

$\Rightarrow \int e^{-rt}dB -\int e^{-rt}rBdt=\int-ke^{-rt}dt$

$\Rightarrow e^{-rt}B=\frac{-ke^{-rt}}{-r} +C$ [ where C arbitrary constant]

$\Rightarrow B(t)=\frac{k}{r} +Ce^{rt}$

Initial condition B=7864 when t =0

$\therefore 7864= \frac{k}{r} - Ce^0$

$\Rightarrow C= \frac{k}{r} -7864$

Then the general solution is

$B(t)=\frac{k}{r}-( \frac{k}{r}-7864)e^{rt}$

To determine the payment rate, we have to put the value of B(3), r and t in the general solution.

Here B(3)=0, r=0.13 and t=3

$B(3)=0=\frac{k}{0.13}-( \frac{k}{0.13}-7864)e^{0.13\times 3}$

$\Rightarrow- 0.48\frac{k}{0.13} +11614.98=0$

⇒k≈3145.72

Therefore rate of payment = $ 3145.72

Therefore the rate of interest = ${(3145.72×3)-7864}

=$1573.17

4 0

4 years ago

The sequence below shows a certain company's expected net worth, in millions of dollars, after 1, 2, 3, and 4 years and so on).

adelina 88 [10]

Answer:

I have no clue, what this means lol

Step-by-step explanation:

5 0

3 years ago