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3 years ago

A suit regularly costs $389.90., Bob buys it on sale for $ 265.00 . How much does he save?

Mathematics

2 answers:

stiks02 [169]3 years ago

8 0

He saves $124.90 because $389.90 - $265.00 = 124.90 and so that is the difference in the prices which is the answer.

irakobra [83]3 years ago

5 0

He saves $124.90 <<<<<<<<<<<<<<

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-Dominant- [34]

Not sure what we need to do for this question, as it appears that you have already completed it, but looking over your answer, the graphed relationship looks correct! And it would take 3 cups of flour to make 90 cookies, as per the table.

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stepan [7]

Answer:

Let z = f(x, y) where f(x, y) =0 then the implicit function is

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Step-by-step explanation:

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Let Z = f(x ,y) be a function of two variables x and y. Then

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It is denoted by δ z / δ x or δ f / δ x

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$\lim_{x \to 0} \frac{f(x,y+dy)-f(x,y)}{dy}$ Exists , is said to be partial derivative or Partial differentiational co-efficient of Z or f(x, y)with respective to y

It is denoted by δ z / δ y or δ f / δ y

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Let z = f(x, y) where f(x, y) =0 then the implicit function is

$\frac{dy}{dx} =$ $\frac{-δ f/ δ x }{δ f/δ y }$

The total differential co-efficient

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Implicit differentiation process

differentiate both sides of the equation with respective to 'x'

move all d y/dx terms to the left side, and all other terms to the right side

factor out d y / dx from the left side
Solve for d y/dx , by dividing

Example : $x^2 + x y +y^2 =1$

solution:-

differentiate both sides of the equation with respective to 'x'

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move all d y/dx terms to the left side, and all other terms to the right side

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

Taking common d y/dx

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

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

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