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otez555 [7]
2 years ago
6

Please help me find x

Mathematics
1 answer:
Luda [366]2 years ago
8 0
Answer is 3x because u do 12-9 which gets three and since it was originally 12x and you don’t know what X is you just put the x on the 3 and get 3x
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If x² + xy – 3y = 3, then at the point (2, 1), dy/dx
Scilla [17]

Answer:

A

Step-by-step explanation:

We have the equation:

x^2+xy-3y=3

Take the derivative of both sides with respect to x:

\frac{d}{dx}[x^2+xy-3y]=\frac{d}{dx}[3]

Implicitly differentiate:

2x+y+x\frac{dy}{dx}-3\frac{dy}{dx}=0

Solve for dy/dx:

\frac{dy}{dx}(x-3)=-2x-y\\

Divide:

\frac{dy}{dx}=-\frac{2x+y}{x-3}

To find dy/dx at (2, 1), substitute 2 for x and 1 for y. So:

\frac{dy}{dx}_{(2, 1)}=-\frac{2(2)+1}{2-3}=-\frac{5}{-1}=5

Hence, our answer is A.

4 0
3 years ago
What is a decimal that is equivalent to the fraction ?<br><br> Enter the answer in the box. <br>​
s344n2d4d5 [400]

Answer:

Answer is 0.44

Step-by-step explanation:

44/100=0.44

3 0
2 years ago
Read 2 more answers
Simplify 6x-2x+10x+2x+7x
Artist 52 [7]
The way is see the problem causes the answer to be 27x<span />
6 0
3 years ago
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You are trying to recreate flubber because you are obsessed with that movie and you thought it was the coolest. you take 70% sli
german

Let x be the amount (gal) of the 40% slime solution you end up using. You want to end up with 120 gal of the 50% solution, so that you would use 120-x gal of the 70% solution.

You want the final solution to consist of 50% slime, or 60 gal of slime. Each gal of the 40% solution contributes 0.4 gal of slime, while each gal of the 70% solution contributes 0.7 gal of slime. This means

0.4x+0.7(120-x)=0.5\cdot120=60

\implies0.4x+84-0.7x=60

\implies24=0.3x

\implies x=80

so the answer is B.

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2 years ago
Pls help ASAPI don’t understand can you show steps too pls
tensa zangetsu [6.8K]

Answer:

x = -2 , y = -1

(-2,-1)

4 0
2 years ago
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