All categories

2 years ago

Given the function f(x) = -x-5/4x^3, then what is f(-2x)as a simplified polynomial?

Mathematics

1 answer:

olchik [2.2K]2 years ago

3 0

Rewrite “f(x)” to -2fx=x-5/4x^3

You might be interested in

Please help me . I am trying to do cancellation but i am having trouble

qwelly [4]

In this question, you are only able to cancel out the (x + 5). The others are unable to be cancelled.

4 0

2 years ago

Estimate the solution of the equation x - 8.1=5.3 to the nearest whole number

lord [1]

2 or 3 I would say... hope that helps : )

3 0

2 years ago

Read 2 more answers

The base of a solid in the region bounded by the two parabolas y2 = 8x and x2 = 8y. Cross sections of the solid perpendicular to

Usimov [2.4K]

The two curves intersect at two points, (0, 0) and (8, 8):

$x^2=8y\implies y=\dfrac{x^2}8$

$y^2=\dfrac{x^4}{64}=8x\implies\dfrac{x^4}{64}-8x=0\implies\dfrac{x(x-8)(x^2+8x+64)}{64}=0$

$\implies x=0,x=8\implies y=0,y=8$

The area of a semicircle with diameter $d$ is $\dfrac{\pi d^2}8$ . The diameter of each cross-section is determined by the vertical distance between the two curves for any given value of $x$ between 0 and 8. Over this interval, $y^2=8x\implies y=\sqrt{8x}$ and $\sqrt{8x}>\dfrac{x^2}8$ , so the volume of this solid is given by the integral

$\displaystyle\frac\pi8\int_0^8\left(\sqrt{8x}-\dfrac{x^2}8\right)^2\,\mathrm dx=\frac{288\pi}{35}$

6 0

3 years ago

What is the probability that a dart will hit a spot in the shaded circle?

amid [387]

Answer:

I would say if you at least try to make it then you will end up making it

Step-by-step explanation:

3 0

2 years ago

(8x-11)-(15-x)=1 dont know where to start with it

schepotkina [342]

Answer:

x = 3

Step-by-step explanation:

First open the brackets. While opening brackets, you've to be careful about signs. So when you open bracket of (15-x), there's negative sign in front of it, so it makes the signs inside the brackets to change. Then you solve the it.

4 0

3 years ago

Read 2 more answers