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Nezavi [6.7K]
3 years ago
8

2(8-12x)+8x=-25x+52 show your work pls I am so confused on this.

Mathematics
1 answer:
Allisa [31]3 years ago
8 0

Answer:

x=4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Add 25x to both sides.

Step 3: Subtract 16 from both sides.

Step 4: Divide both sides by 9.

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X-9/2=-12 guys please help
Lesechka [4]

<u>Step-by-step explanation:</u>

How to solve for x?

Eliminate -(9/2) to find out the value of x.

<u>Add 9/2 to both sides of the equation:</u>

x =  - 7.5

8 0
2 years ago
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A speed boat is traveling at 100km/hr. how many hours will it take for the boat to cover a distance of 115?
Oliga [24]

Answer

1.15 hours

Step-by-step explanation:

Assuming 115 is 115 km then you just move the decimal point twice and get 1.15!

For example - (Starting number) 115.    (Moving decimal point) 115. -> 11.5 -> 1.15

5 0
3 years ago
At an after christmas sale all christmas decorations were 3/4 off how much would you save on a $16 tree ornament
Finger [1]
So the ornament is $16.00-3/4% off=15.88
-3/4%=0.12 So, $16.00-0.12=15.88
The ornament costs $15.88.
7 0
3 years ago
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One minute after it is released, a hot-air balloon rises 120 feet. In each succeeding minute, the balloon rises only 60% as far
MArishka [77]

Answer:

25.92 feet

Step-by-step explanation:

In the first minute, the hot air balloon rises 120 feet.

And it is given that, the balloon rises in a minute only 60% of the height it rose in the previous minute.  

Therefore, in the second minute, the balloon rises by (120×0.6) =72 feet

And in the third minute, the balloon rises by (72×0.6) =43.2 feet

Hence, in the fourth minute, the balloon rises by (43.2 ×0.6) =25.92 feet (Answer)

7 0
3 years ago
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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
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