4 years ago

Which of the following must be negative?

Mathematics

1 answer:

34kurt4 years ago

5 0

The product of 3 negative numbers is the answer

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Sarah bought a new lip gloss. It cost $8.99 plus 5% tax. How much did she pay for the lip<br> gloss?

Alexxandr [17]

Answer:

9.4395

Step-by-step explanation:

5% of 8.99= 0.4495

cost of lip gloss8.99

$8.99+$0.4495=$9.4395

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2 years ago

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earnstyle [38]

12 times 2 is 24, and 24 times 2 is 48, so there was 48 cookies

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3 years ago

Finding Derivatives Implicity In Exercise, find dy/dx implicity.<br> x2 - 3 ln y + y2 = 10

Veseljchak [2.6K]

Answer:

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

Step-by-step explanation:

We are given that

$x^2-3lny+y^2=0$

Differentiate w.r.t x

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

By using formula

$\frac{dx^n}{dx}=nx^{n-1}$

$\frac{d(lnx)}{dx}=\frac{1}{x}$

$\frac{dy^n}{dx}=ny^{n-1}\frac{dy}{dx}$

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

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

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

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

Hence, the derivative of function

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

8 0

4 years ago

the fastest elevators in the burn khalifa can travel 330 ft in just 10 seconds how far just elevator travel in one second

ycow [4]

Answer:

33ft/sec

Step-by-step explanation:

Divide the distance by time to find speed:

330ft / 10 sec = 33ft/sec

5 0

3 years ago

Read 2 more answers

Alg 1

V125BC [204]

The first and last term factor into (2x+7) since this is a perfect square trinomial the answer must be 28

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3 years ago