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adoni [48]
2 years ago
9

What is one of the steps when solving the system by elimination -4x-10y=-28 4x+7y=22 a -3y=-6 b 4x=22 c 4x=-6 d 3y=-6

Mathematics
1 answer:
Arlecino [84]2 years ago
7 0

Answer Put the equations in Standard Form.

Step-by-step explanation:

Step 1: Put the equations in Standard Form. Step 2: Determine which variable to eliminate. Step 3: Add or subtract the equations. Step 4: Plug back in to find the other variable.

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Choose the best description for the real number 34/3
leonid [27]
The best description to simplify 34/3 would be 11.33 on going

6 0
3 years ago
Find the extreme values of the function f(x, y) = 4x2 + 6y2 on the circle x2 + y2 = 1.
julia-pushkina [17]

Answer with Step-by-step explanation:

We are given that

f(x,y)=4x^2+6y^2

Let g(x,y)=x^2+y^2=1

We have to find the extreme values  of the given function

\nabla f(x,y)

\nabla g(x,y)=

Using Lagrange multipliers

\nabla f(x,y)=\lambda \nabla g(x,y)

f_x=\lambda g_x

8x=\lambda 2x

Possible value x=0 or \lambda=4

If x=0 then substitute the value in g(x,y)

Then, we get y=\pm 1

f_y=\lambda g_y

12y=\lambda 2y

If \lambda=4 and substitute in the equation

Then , we  get possible value of y=0

When y=0 substitute in g(x,y) then we get

x=\pm 1

Hence, function has possible  extreme values at points (0,1),(0,-1), (1,0) and (-1,0).

f(0,1)=6

f(0,-1)=6

f(1,0)=4

f(-1,0)=4

Therefore, the maximum value of f  on the circlex^2+y^2=1  is f(0,\pm1)=6 and minimum value of f(\pm1,0)=4

7 0
2 years ago
Cornelius is at it again! He wrote a really confusing expression that needs to be simplified:
ziro4ka [17]
The answer is 3x2 + 8x + 8. (the 2 infront of 3x means squared I just could type it)
5 0
2 years ago
Read 2 more answers
PLEASE HELP ME
irina1246 [14]

Answer:

B) (-1, -2)

Step-by-step explanation:

3x + 1 = x - 1

-3x - 3x

___________

1 = −2x - 1

+1 + 1

_________

2 = −2x

_ ___

−2 −2

x = -1 [Plug this back into both equations above to get the y-coordinate of -2]; -2 = y

I am joyous to assist you anytime.

6 0
3 years ago
PLEASE HELP ASAP! Will give brainliest to best answer!
oksian1 [2.3K]

Answer:

G

Step-by-step explanation:

It looks like it would be c=4b but 4*7 equals 28 not 30

4 0
3 years ago
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