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3 years ago

Which answer shows 2.13786 times 10 Superscript 4 written in standard form? 0.000213786 2,137.86 21,378.6 2,137,860,000

Mathematics

2 answers:

Svetradugi [14.3K]3 years ago

6 0

Answer:

21378.6

Step-by-step explanation:

You move the decimal point four places towards the right.

podryga [215]3 years ago

4 0

Answer:

21378.6

Step-by-step explanation:

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D^2(y)/(dx^2)-16*k*y=9.6e^(4x) + 30e^x

MA_775_DIABLO [31]

The solution depends on the value of $k$ . To make things simple, assume $k>0$ . The homogeneous part of the equation is

$\dfrac{\mathrm d^2y}{\mathrm dx^2}-16ky=0$

and has characteristic equation

$r^2-16k=0\implies r=\pm4\sqrt k$

which admits the characteristic solution $y_c=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}$ .

For the solution to the nonhomogeneous equation, a reasonable guess for the particular solution might be $y_p=ae^{4x}+be^x$ . Then

$\dfrac{\mathrm d^2y_p}{\mathrm dx^2}=16ae^{4x}+be^x$

So you have

$16ae^{4x}+be^x-16k(ae^{4x}+be^x)=9.6e^{4x}+30e^x$
$(16a-16ka)e^{4x}+(b-16kb)e^x=9.6e^{4x}+30e^x$

This means

$16a(1-k)=9.6\implies a=\dfrac3{5(1-k)}$
$b(1-16k)=30\implies b=\dfrac{30}{1-16k}$

and so the general solution would be

$y=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}+\dfrac3{5(1-k)}e^{4x}+\dfrac{30}{1-16k}e^x$

8 0

3 years ago

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

masya89 [10]

Answer:

$93.50

Step-by-step explanation:

$5.50 x 17 = $93.50

Hope that helps!

6 0

3 years ago

Read 2 more answers

Bots have answered this for the past two times but I still need help. The question is below.

zloy xaker [14]

Answer:

a. False

b. True

c. True

d. I think it's true

e. False

Step-by-step explanation:

a. The unit rate is 19.75 gallons per minute

b. It is true because when x=0 y is also equal to 0, therefore it passes through the origin

c. 19.75 is about 20, and 20 multiplied by 5 is 100

d. Like I said before I don't know but I hope you get it correct ._.

e. When x=8 the equation would be 19.75*8 which is equal to 158 not 150

8 0

2 years ago

Read 2 more answers

Daredevil Danny takes a practice jump as shown on the graph below. Complete the steps to determine the equation for the paraboli

Tju [1.3M]

Answer:

Step 2:

Part A

f(x) = a(x-h)^2 +k

Part B

I'm not really sure about this part

Part C

f(x)=-12/25(x-25)^2+32

Step 3:

Part A

y = ax^2 + bx + c

Part B

f(x) = -12/25(x - 25)^2 + 32

Part C

a = -12/25

b = 0

c = 32

Step-by-step explanation:

Hope This Helps!

Sorry For Taking So Long!

3 0

4 years ago

I need help please !!!

Zarrin [17]

Answer:

1. it is given

2. the definition of angle bisector

3. the reflexive property

4. SAS

5. corresponding parts of congruent triangles are congruent

3 0

3 years ago