Предмет: Алгебра, автор: magzhanovaleksei

an=5n^2+7 найти третий член последовательности

Ответы

Автор ответа: Crash7991
0

a=5*3*3+7=52

ответ: а= 52 

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Предмет: Английский язык, автор: dias2019b0307
Everytime you are going to connect to the internet, you must protect your computer. If you don’t, it is like leaving your door wide open for robbers. You’ve probably heard everything such like computer virus, hacker, firewall, spyware and a lot more. Perhaps, you think that the anti-virus application that came along with the computer is enough to keep you safe, right? Wrong ….

First of all, you need a firewall. This is your first line of protection, causing it highly troublesome for some hacker to get through. However, nothing is perfectly unbreakable, but anti-virus software shall always watch for anything suspicious that disturb your computer and having an anti-virus software is important.

But there are things that can get into your computer in the unusual ways. It can be accidently added by you when you tried to download music, screensavers or pc games onto your computer. It can even be downloaded by someone you know and trust, like a friend. This malicious software is called spyware and its threatening, it can break out your privacy which allows people or computer programs to discover what you’re doing, what sites you are viewing and even log your keystrokes so that they can find out the characters you type in, such as passwords and credit card details. The most fundamental thing to protect your system against spyware is to install a powerful software that catch and removes it.

Well, you have your firewall and your anti-virus software in place. Probably, you think that an anti-spyware application is only money down the drain. That is not true. This software would fill up the gaps leftover by your other security application, and it will be like closing all your doors and windows and having a warning signal system equipped before you’re leaving your computer, but some highly skilled hacker can still break in if they really wanted to.



Task 1. Read the text and mark the sentences TRUE/FALSE. Correct FALSE sentences

1) You don’t need to protect your computer when you are going to connect to the internet all the time [1]

2) Having an anti-virus software is important [1]

3) You can get a spyware by downloading pc game from the internet [1]

4) An anti-spyware application is only money down the drain [1]