All categories

3 years ago

3x-2y=4 How do you do this using common core ?

Mathematics

2 answers:

Citrus2011 [14]3 years ago

6 0

First, you graph the equation. Than you do 3x + 2y =4 3 x + 2 y =4. After that you solve for y and y.

bixtya [17]3 years ago

3 0

Graph 3x+2y=4.
3x+2y=4 3 x + 2 y = 4.
Solve for y y .
Since 3x 3 ⁢ x does not contain the variable to solve for, move it to the right side of the equation by subtracting 3x 3 ⁢ x from both sides.

You might be interested in

A park has a walking path in the shape of a rectangle. The side by a lake is 180 meters. The walking path also has a 200-meters

Jet001 [13]

The answer is A(87).I just plugged the numbers into the Pythagorean Theorem. 200^2 - 180^2 = the square root of 7,600, which equals about 87.

6 0

3 years ago

Read 3 more answers

Show that (2xy3 + cos x)dx + (3x2 y2 − sin y)dy = 0 is exact, and find the solution. Find c if y(0) = π

Licemer1 [7]

We're looking for a solution of the form $F(x,y)=C$ . By the chain rule, this solution should have total differential

$\mathrm dF=\dfrac{\partial F}{\partial x}\,\mathrm dx+\dfrac{\partial F}{\partial y}\,\mathrm dy=0$

and the equation is exact if the mixed second-order partial derivatives of $F$ are equal, i.e. $\frac{\partial^2F}{\partial x\partial y}=\dfrac{\partial^2F}{\partial y\partial x}$ .

The given ODE is exact, since

$\dfrac{\partial(2xy^3+\cos x)}{\partial y}=6xy^2$

$\dfrac{\partial(3x^2y^2-\sin y)}{\partial x}=6xy^2$

Then

$\dfrac{\partial F}{\partial x}=2xy^3+\cos x\implies F(x,y)=x^2y^3+\sin x+f(y)$

$\dfrac{\partial F}{\partial y}=3x^2y^2-\sin y=3x^2y^2+\dfrac{\mathrm df}{\mathrm dy}$

$\dfrac{\mathrm df}{\mathrm dy}=-\sin y\implies f(y)=\cos y+C$

$\implies x^2y^3+\sin x+\cos y=C$

With $y(0)=\pi$ , we get

$\cos\pi=C\implies C=-1$

$\implies\boxed{x^2y^3+\sin x+\cos y=-1}$

6 0

2 years ago

Out of a total of 300 animal in a zoo 45 are bird's what percent of the animal in the zoo are bird's

Neporo4naja [7]

The percentage of birds in the zoo will be 15%

4 0

3 years ago

A classmate simplifies the expression in exercise 1. is the expression he wrote equivalent to the original expression? explain.

AlladinOne [14]

Excercise 1:

No, this is not simplified fully. The full answer would be −7dk+14d−21k−7, not 14d - 9 - 21k - 7dk + 2. So, it is not equivalent.

Excercise 4:
7dk (2 - 3 - 1) - 7

Just multiply 7dk into (2) (-3) and (-1)
you'd get:
−14dk+−7 after simplifying it fully.

p = parameter
w = width

w+2.75

p = 2w+2(w+2.75) = 4w+5.5 = 30

Answer to the last one:

w = 6.125

4 0

2 years ago

Three times the sum of a number and 5 is 4

galben [10]

i think it is 27 i did 5+4 then i did 9x3 and got 27

4 0

3 years ago

Read 2 more answers