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3 years ago

10

After a 15% off sale,some jeans were $11.50.How much were the jeans before the sale?

1 answer:

Nookie1986 [14]3 years ago

3 0

$13.53 is the answer to you problem

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Find dy/dx for 4 - xy = y^3

storchak [24]

Answer:

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

Step-by-step explanation:

4-xy=y^3

dy/dx=?

$\frac{d(4-xy)}{dx}=\frac{d(y^3)}{dx}\\ \frac{d(4)}{dx}-\frac{d(xy)}{dx}=3y^{3-1}\frac{dy}{dx}\\ 0-(\frac{dx}{dx}y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(1y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -y-x\frac{dy}{dx}=3y^2\frac{dy}{dx}$

Solving for dy/dx: Addind x dy/dx both sides of the equation:

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

Common factor dy/dx on the right side of the equation:

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

Dividing both sides of the equation by 3y^2+x:

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

7 0

3 years ago

(Please help) The expression (x^16)(x^-24) is equivalent to x^n. What is the value of n?

victus00 [196]

Answer:

8

Step-by-step explanation:

6 0

3 years ago

72 inches equals how much yards

Scorpion4ik [409]

Answer: 2 yards

Step-by-step explanation: there are 36 inches in a yard so divide 72 by 36 to get 2 which is the answer to the question

hope this helps mark me brainliest if you can

7 0

3 years ago

Read 2 more answers

Solve equation. Verify answer 14=-2w

notka56 [123]

Answer:

w = -7

Step-by-step explanation:

Isolate the variable, w. Note the equal sign, what you do to one side, you do to the other.

Divide -2 from both sides:

(14)/-2 = (-2w)/-2

(14)/-2 = w

Note that when you are dividing:

1 negative & 1 positive sign will result in a negative answer
2 negative sign will result in a positive
2 positive sign will result in a positive

In this case:

(14)/-2 = -7

-7 is your answer for w.

~

8 0

3 years ago

If a cylinder has a volume of 54 cubic inches what would be the voulume of a cone with the same radius

Mademuasel [1]

Answer:

a) 16 in³

Step-by-step explanation:

Vol (cyl) = πr²h = 54

Vol (cone) = πr²h/3

54/3 = 16

6 0

2 years ago