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sashaice [31]
3 years ago
6

F(x)=5x^2+5x-30 if anyone can help me that would be great

Mathematics
1 answer:
Anarel [89]3 years ago
4 0

Answer:

x= 2,-3

Step-by-step explanation:

Is this what you want?

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5y+30 5 complete the factoring ...?
krek1111 [17]
Well, I don't really understand if it is 30 or 305 because of the spacing but I'll answer both. If it is 5y+305, just divide the whole equation by 5 and it will look like this (<u>5y+305)</u>  then the factor would be 5(y+61)<u>
</u>                   5 
If it is 5y+30 it would be just in the same process, Divide the equation by 5 and the result will be 5(y+6).
8 0
3 years ago
Say a hacker has a list of n distinct password candidates, only one of which will successfully log her into a secure system. a.
alexdok [17]

Answer:

The probability is \frac{1}{n}

Step-by-step explanation:

If she has n distinct password candidates and only one of which will successfully log her into a secure system, the probability that her first first successful login will be on her k-th try is:

If k=1

P = \frac{1}{n}

Because, in her first try she has n possibles options and just one give her a successful login.

If k=2

P=\frac{n-1}{n} *\frac{1}{n-1} =\frac{1}{n}

Because, in her first try she has n possibles options and n-1 that are not correct, then, she has n-1 possibles options and 1 of that give her a successful login.

If k=3

P=\frac{n-1}{n} *\frac{n-2}{n-1} *\frac{1}{n-2} = \frac{1}{n}

Because, in her first try she has n possibles options and n-1 that are not correct, then, she has n-1 possibles options and n-2 that are not correct and after that, she has n-2 possibles options and 1 give her a successful login.

Finally, no matter what is the value of k, the probability that her first successful login will be (exactly) on her k-th try is 1/n

7 0
3 years ago
Simplify the expression. Write the answer using scientific notation. (5 x 102)−2
marissa [1.9K]
102 multiply 5 is equally to 610 so that's gonna be 6.10 I think
7 0
3 years ago
Read 2 more answers
Math help help help answer all 4 pls
serious [3.7K]

Answer:

a) 2,350,000,000

b) 25,000,000

c) B

Step-by-step explanation:

a) 2350 X 1,000,000 = 2,350,000,000

b) 25 X 10^6 = 25,000,000

c) sqrt(90000) =300

7 0
2 years ago
Read 2 more answers
A rectangular prism measures 8 inches by 8 inches by 12 inches. What is it's surface area
Arlecino [84]
64 inches is the correct answer. To get it you need to multiply the length times the width.

(this is incorrect. Sorry for the inconvenience)
3 0
3 years ago
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