2 years ago

If h(x) = 2x4 - 4x2 - 2x, then h(3)=

Mathematics

2 answers:

Liono4ka [1.6K]2 years ago

8 0

Answer: 120

Step by step solution: see photo

Kruka [31]2 years ago

6 0

Answer:

h(3)=-6

Step-by-step explanation:

sub 3 into all the positions which variable X is present

$h(3) =( 2 \times 4) - (4 \times 2) - 2(3)$

$h(3) = 8 - 8 - 6$

$h(3) = - 6$

You might be interested in

A vertical cylinder is leaking water at a rate of 4m3/sec. If the cylinder has a height of 10m and a radius of 2m, at what rate

Katyanochek1 [597]

Answer:

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

Step-by-step explanation:

Given that a vertical cylinder is leaking water at rate of 4 m³/s.

It means the rate change of volume is 4 m³/s.

$\frac{dV}{dt}=4 \ m^3/s$

The radius of the cylinder remains constant with respect to time, but the height of the water label changes with respect to time.

The height of the cylinder be h(say).

The volume of a cylinder is $V=\pi r^2 h$

$=( \pi \times 2^2\times h)\ m^3$

$\therefore V= 4\pi h$

Differentiating with respect to t.

$\frac{dV}{dt}=4\pi \frac{dh}{dt}$

Putting the value $\frac{dV}{dt}$

$\Rightarrow 4\pi \frac{dh}{dt}=4$

$\Rightarrow \frac{dh}{dt}=\frac{4}{4\pi}$

$\Rightarrow \frac{dh}{dt}=\frac{1}{\pi}$

The rate change of height does not depend on the height.

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

4 0

3 years ago

a recipe for ginger cookie uses 4 cups of flour and 2 cups of sugar write a ratio to show the relationship of flour to sugar

yanalaym [24]

For every ginger cookie:

4:2

3 0

3 years ago

If a=3 and b=4 wat is it ?

Anarel [89]

Answer:

what is what?

Step-by-step explanation:

5 0

2 years ago

Megan decided to run in a 10-km race. Her time of 82 minutes was twice as long a the winner's time. What was the winner's time?

erik [133]

The answer is 41 because half of 82 is 41

8 0

3 years ago

If a=3 and b=7, find the value of<br>5a

Usimov [2.4K]

Answer: 15

Step-by-step explanation: All the information you need is a=3

5a is the same as saying 5xa or 5x3, so there you have it- 15

Hope this helps <3

4 0

3 years ago