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3 years ago

How do find a number out of a percent

2 answers:

7 0

You only have the % and you need the number. For example i got a 87% on my Math test what is that as a decimal? The answer is 0.87 because you move the decimal ahead 2 numbers.

umka21 [38]3 years ago

3 0

Percentage is 100....so assuming u HV 60% ..that is
1/100 *60/1

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Write the given differential equation in the form L(y) = g(x), where L is a linear differential operator with constant coefficie

melamori03 [73]

Answer:

The complete solution is

$\therefore y= Ae^{3x}+Be^{-\frac13 x}-\frac43$

Step-by-step explanation:

Given differential equation is

3y"- 8y' - 3y =4

The trial solution is

$y = e^{mx}$

Differentiating with respect to x

$y'= me^{mx}$

Again differentiating with respect to x

$y''= m ^2 e^{mx}$

Putting the value of y, y' and y'' in left side of the differential equation

$3m^2e^{mx}-8m e^{mx}- 3e^{mx}=0$

$\Rightarrow 3m^2-8m-3=0$

The auxiliary equation is

$3m^2-8m-3=0$

$\Rightarrow 3m^2 -9m+m-3m=0$

$\Rightarrow 3m(m-3)+1(m-3)=0$

$\Rightarrow (3m+1)(m-3)=0$

$\Rightarrow m = 3, -\frac13$

The complementary function is

$y= Ae^{3x}+Be^{-\frac13 x}$

y''= D², y' = D

The given differential equation is

(3D²-8D-3D)y =4

⇒(3D+1)(D-3)y =4

Since the linear operation is

L(D) ≡ (3D+1)(D-3)

For particular integral

$y_p=\frac 1{(3D+1)(D-3)} .4$

$=4.\frac 1{(3D+1)(D-3)} .e^{0.x}$ [since $e^{0.x}=1$ ]

$=4\frac{1}{(3.0+1)(0-3)}$ [ replace D by 0 , since L(0)≠0]

$=-\frac43$

The complete solution is

y= C.F+P.I

$\therefore y= Ae^{3x}+Be^{-\frac13 x}-\frac43$

4 0

2 years ago

If you can buy 1/3 of a box of chocolates for 6 dollars how much can you purchase for 4 dollars?

sladkih [1.3K]

$You \: can \: purchase :4 \times \frac{1}{3} \div 6 = \frac{2}{9} \: of \: a \: box$

5 0

3 years ago

33. Does this graph have a minimum or maximum value?

Bond [772]

For question 40 the answer is B

3 0

2 years ago

What is the median of the ages in this stem-and-leaf plot? 43 45 46 47

ICE Princess25 [194]

To find a median of an even amount of numbers, add the two middle numbers, and divide by two.

45 + 46 = 91

91/2 = 45.5

45.5 is your median

hope this helps

6 0

3 years ago

Read 2 more answers

pete is a furniture refinisher. to paint a chest of drawers, he needs 1/2 gallon of paint. he has 1 quart. how many more quarts

bezimeni [28]

Pete needs one more quart of paint, leaving two quarts in total.

7 0

2 years ago