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3 years ago

When a piece of shiny silver jewelry gets tarnished, what has happened?

1 answer:

6 0

A
because if you leave certain metals in the rain they tarnish or rust. think about how if you leave a bike in the rain for too long it will start to rust on the metal parts

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Sketch f(x) = 5x2 - 20 labelling any intercepts.

Norma-Jean [14]

Answer:

The graph of the function is attached below.

The x-intercepts will be: (2, 0), (-2, 0)

The y-intercept will be: (-20, 0)

Explanation:

Given the function

$f\left(x\right)\:=\:5x^2-\:20$

As we know that the x-intercept(s) can be obtained by setting the value y=0

$y=\:5x^2-\:20$

switching sides

$5x^2-20=0$

Add 20 to both sides

$5x^2-20+20=0+20$

$5x^2=20$

Dividing both sides by 5

$\frac{5x^2}{5}=\frac{20}{5}$

$x^2=4$

$\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}$

$x=\sqrt{4},\:x=-\sqrt{4}$

$x=2,\:x=-2$

so the x-intercepts will be: (2, 0), (-2, 0)

we also know that the y-intercept(s) can obtained by setting the value x=0

$y=\:5(0)^2-\:20$

$y=0-20$

$y=-20$

so the y-intercept will be: (-20, 0)

From the attached figure, all the intercepts are labeled.

8 0

2 years ago

A. Requiring computer users to log off before leaving for lunch

GuDViN [60]

Answer:

Option A, B, and D.

Explanation:

In the above question, the some details of the question are missing that is the part of the question.

Information Security applies to the mechanisms and techniques built and maintained to secure print, computerized, or any other type of personal, secret and confidential information or records from unauthorized access, usage, exploitation, release, damage, manipulation, or disturbance.

So, the following are the option that is true about the scenario.

Other option is not true about the scenario because Option C the click fraud are not the part or protect from the information security and Option F is not considered to the following scenario.

7 0

3 years ago

A company needs to store its documents in one place, share news and information with all staff, and allow access for employees w

Greeley [361]

An NAS
Would do The Trick

4 0

2 years ago

What term is used to describe the process of monitoring operating results and comparing actual results with the expected results

s344n2d4d5 [400]

Answer:

controlling

Explanation:

hope this helps

7 0

2 years ago

Which Additional Authorization List item can replace the hook at the end of the winch cable for fastening the cable to some load

satela [25.4K]

Answer:

Shackle

Explanation:

A winch may be defined as a mechanical device which is used to pull in or let out the rope or cable maintaining its tension. It can also adjust the tension of the cable or the rope.

It is mainly used in tow trucks, elevators and steam shovels.

Shackle is one of the additional authorization list of a vehicle with a winch which can be used to replace the hook of the cable of the winch.

8 0

3 years ago