All categories

3 years ago

Will award brainlist d+6/−2=5. What is d

Mathematics

1 answer:

Advocard [28]3 years ago

5 0

d+6/-2=5

d-3=5

d=8

hope it helps

You might be interested in

Which of the following conditions must be met in order to make a statistical inference about a population based on a

Artist 52 [7]

The correct answer is C. n is greater than or equal to 30

8 0

2 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

My sisters age is greater than 40 but less than 50. Her age is divisible by 2, 4, 8, and 12. How old is my sister?

Elodia [21]

Answer:

Step-by-step explanation:

48 is divisble by all of them

5 0

2 years ago

Read 2 more answers

The piecewise function h(x) is shown on the graph.

Artemon [7]

Step-by-step explanation/Answer:

The value for h(3) is 1.

Coordinate (3,1)

The value on h(3) is located in the last part of the piecewise function, which starts at (1,3) until (4,0). To know the exact image of h(3), we can find the function that belongs to that piece of line, and then calculated the asked value.

So, to calculate the equation, we first have to find the slope with its definition, and then we'll use the point-slope formula to find the equation:

Therefore, the coordinates is (3,1), that is, the value for h(3) is 1.

3 0

2 years ago

Read 2 more answers

Select all that have a value of 0. Cost cos 0 sin 0 sin 34 tan x DONE

olga nikolaevna [1]

Answer:

sin 0

and tan x when x =0

will provide a value of 0

8 0

3 years ago

Read 2 more answers