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3 years ago

CAN SOMEONE DO THIS FOR ME I WOULD REALLY APPRECIATE IT

Mathematics

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer:

ugh

Step-by-step explanation:

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What is 1990 divided by 24?

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<span>What is 1990 divided by 24?
1990 divided by 24 is 82 with a remainder of 22 or 83 r</span><span>ounding to the whole number.</span>

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3 years ago

Use the figure to find the angle measures.

kicyunya [14]

Answer:

a. 50 degree

b.40 degree

c.140 degree

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Is the following inequality true : 4 <_ 4 ?

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Answer:

Yes

Step-by-step explanation:

This is true because it is asking you if this is less than or EQUAL TO. 4 = 4, making it true.

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2 years ago

Estimate 195 divided by 4. Tell which method is used.

ki77a [65]

195 ÷ 4 = 48.75
Is this what you wanted?

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Match solutions and differential equations. Note: Each equation may have more than one solution. Select all that apply. (a) 7y''

Nonamiya [84]

Answer:

a- $e^x,e^{-x}$

b- $x^{-2}$

c- $x^3$

Step-by-step explanation:

a.7 y''-7 y =0

Auxillary equation

$D^2-1=0$

$(D-1)(D+1)=0$

D=1,-1

Then , the solution of given differential equation

$y=e^x,y=e^{-x}$

2. $7x^2y''+14xy'-14 y=0$

Y= $y=x^3$

$y=3x^2$

$y''=6x$

Substitute in the given differential equation

$42x^3+42x^3-14x^3\neq 0$

Hence, $x^3$ is not a solution of given differential equation

$e^x,e^{-x}$ are also not a solution of given differential equation.

y= $x^{-2}$

$y'=-2x^{-3}$

$y''=6x^{-4}$

Substitute the values in the differential equation

$7x^2(6x^{-4})+14x(-2x^{-3})-14 x^{-2}$

= $42x^{-2}-28x^{-2}-14x^{-2}=0$

Hence, $x^{-2}$ is a solution of given differential equation.

c. $7x^2y''-42y=0$

$y=x^3$

$y'=3x^2$

$y''=6x$

Substitute the values in the differential equation

$42x^3-42x^3=0$

Hence, $x^3$ is a solution of given differential equation.

a- $e^x,e^{-x}$

b- $x^{-2}$

c- $x^3$

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3 years ago

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