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3 years ago

What is the slope of a perpendicular line to 3.2 + 4y = 9?

Mathematics

1 answer:

inysia [295]3 years ago

5 0

The answer would be Undefined

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How far is 0, 7 from the origin

Delvig [45]

Answer:

Step-by-step explanation:

Count the numbers in between (0,0) and (0,7).

5 0

3 years ago

Answer correct please

natita [175]

Answer:

correct

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Please answer it quickly the question is below!!! 40 points!!!!

andrew-mc [135]

Answer:

187.5 ft

Step-by-step explanation:

50 ft x 3.75 = 187.5

8 0

3 years ago

Find a linear second-order differential equation f(x, y, y', y'') = 0 for which y = c1x + c2x3 is a two-parameter family of solu

Alisiya [41]

Let $y=C_1x+C_2x^3=C_1y_1+C_2y_2$ . Then $y_1$ and $y_2$ are two fundamental, linearly independent solution that satisfy

$f(x,y_1,{y_1}',{y_1}'')=0$
$f(x,y_2,{y_2}',{y_2}'')=0$

Note that ${y_1}'=1$ , so that $x{y_1}'-y_1=0$ . Adding $y''$ doesn't change this, since ${y_1}''=0$ .

So if we suppose

$f(x,y,y',y'')=y''+xy'-y=0$

then substituting $y=y_2$ would give

$6x+x(3x^2)-x^3=6x+2x^3\neq0$

To make sure everything cancels out, multiply the second degree term by $-\dfrac{x^2}3$ , so that

$f(x,y,y',y'')=-\dfrac{x^2}3y''+xy'-y$

Then if $y=y_1+y_2$ , we get

$-\dfrac{x^2}3(0+6x)+x(1+3x^2)-(x+x^3)=-2x^3+x+3x^3-x-x^3=0$

as desired. So one possible ODE would be

$-\dfrac{x^2}3y''+xy'-y=0\iff x^2y''-3xy'+3y=0$

(See "Euler-Cauchy equation" for more info)

6 0

3 years ago

Find the unit rate of 183 miles in 3 hours

klio [65]

30. find the unit rate of 183 miles in 3 hours IF you want me to show the unit rate in miles per hour here is the method to do that: => 183 miles / 3 hours = 61 miles per hour. Thus the unit rate is 61 miles per hour or 61 miles /h Now, if you want to see the unit rate in miles per minute then here is the method to do that: => 1 hour = 60 minutes => 3 hours = 180 minutes => 183 miles / 180 minutes = 1.02 miles per minute

7 0

3 years ago