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3 years ago

28x + 24y + 40 hurry

Mathematics

1 answer:

Pavel [41]3 years ago

3 0

Answer:

4(7x+6y=10)

Step-by-step explanation:

ask in comments for steps if you need them

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6. (CED.2, REI. 6) A manager is comparing

Mariulka [41]

I think the answer for this question is the second one

6 0

2 years ago

Please help fast the bottom one I’ll give brainless an extra points for correct answer

sergiy2304 [10]

Answer:

2*2*2*3*3*7

Step-by-step explanation:

prime facotrization = 2^3 x 3^2 x 7^1

2 x 2 x 2 x 3 x 3 x 7 = 504

8 0

2 years ago

Solve these linear equations in the form y=yn+yp with yn=y(0)e^at.

WINSTONCH [101]

Answer:

a) $y(t) = y_{0}e^{4t} + 2$ . It does not have a steady state

b) $y(t) = y_{0}e^{-4t} + 2$ . It has a steady state.

Step-by-step explanation:

a) $y' -4y = -8$

The first step is finding $y_{n}(t)$ . So:

$y' - 4y = 0$

We have to find the eigenvalues of this differential equation, which are the roots of this equation:

$r - 4 = 0$

$r = 4$

So:

$y_{n}(t) = y_{0}e^{4t}$

Since this differential equation has a positive eigenvalue, it does not have a steady state.

Now as for the particular solution.

Since the differential equation is equaled to a constant, the particular solution is going to have the following format:

$y_{p}(t) = C$

$(y_{p})' -4(y_{p}) = -8$

$(C)' - 4C = -8$

C is a constant, so (C)' = 0.

$-4C = -8$

$4C = 8$

$C = 2$

The solution in the form is

$y(t) = y_{n}(t) + y_{p}(t)$

$y(t) = y_{0}e^{4t} + 2$

b) $y' +4y = 8$

The first step is finding $y_{n}(t)$ . So:

$y' + 4y = 0$

We have to find the eigenvalues of this differential equation, which are the roots of this equation:

$r + 4 =$

$r = -4$

So:

$y_{n}(t) = y_{0}e^{-4t}$

Since this differential equation does not have a positive eigenvalue, it has a steady state.

Now as for the particular solution.

Since the differential equation is equaled to a constant, the particular solution is going to have the following format:

$y_{p}(t) = C$

$(y_{p})' +4(y_{p}) = 8$

$(C)' + 4C = 8$

C is a constant, so (C)' = 0.

$4C = 8$

$C = 2$

The solution in the form is

$y(t) = y_{n}(t) + y_{p}(t)$

$y(t) = y_{0}e^{-4t} + 2$

6 0

3 years ago

tinas rectangular living room floor measures 15 feet by 18 feet.how many square feet of carpet will tina need to cover the entir

Thepotemich [5.8K]

Hello from MrBillDoesMath!

Answer:

270 in^2

Discussion:

Area of rectangular floor = length * width

= 15 * 18

= 270

Thank you,

MrB

7 0

3 years ago

Dion ran 3.75 kilometers each day to prepare for a race.

Sladkaya [172]

Answer:

105 km

Step-by-step explanation:

3.75 x 28 = 105 km

5 0

3 years ago

Read 2 more answers