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SashulF [63]
4 years ago
15

2/7(x+4)=−6 solve for x

Mathematics
2 answers:
bekas [8.4K]4 years ago
5 0
X=-25

bc you would distribute 2/7 into (x+4) then subtract on both sides and isolate the variable
lara31 [8.8K]4 years ago
4 0

Answer:

x = -25

Step-by-step explanation:

solve for x by simplifying both sides of the equation, then isolating the variable.

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assume x and y are both differentiable functions of t. find dx/dt given x=-1 and dy/dt=8 for the relation: 4x^2+3y^3=28
melomori [17]

Given:

x and y are both differentiable functions of t.

4x^2+3y^3=28

x=-1\text{ and }\dfrac{dy}{dt}=8

To find:

The value of \dfrac{dx}{dt}.

Solution:

We have,

4x^2+3y^3=28       ...(i)

At x=-1,

4(-1)^2+3y^3=28

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Divide both sides by 3.

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Taking cube root on both sides.

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Differentiate (i) with respect to t.

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Putting x=-1, y=2 and \dfrac{dy}{dt}=8, we get

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Divide both sides by -8.

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\dfrac{dx}{dt}=36

Therefore, the value of 4x^2+3y^3=28 is 36.

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Answer:

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