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BARSIC [14]
3 years ago
15

Simplify the following: (-83)2​

Mathematics
1 answer:
Anika [276]3 years ago
8 0
The answer is -166, your welcome
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22 random samples were selected from a population that has a normal distribution the sample has a mean of 99 and a standard devi
olga2289 [7]

Answer:

(96.91, 101.09)

Step-by-step explanation:

To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:

X-Zs/\sqrt{x} \\X+Zs/\sqrt{x}

Where X is the mean and s is the standard deviation and x the sample size:

99-1.96\cdot{5}/\sqrt{22} \\99+1.96\cdot{5}/\sqrt{22}

The interval is (96.91, 101.09)

3 0
3 years ago
Read 2 more answers
Im having a hard time on this question and I hope you can help.
Masja [62]

The answer would be x ≠ 0

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

First start with the left side, doing distributive property

So... -2(x) = -2x and -2(5) = -10 Therefore on the left side you now have -2x -10

Next do the same on the right side

-2(x) = - 2x and -2(-2) = 4 so you have -2x + 4 + 5 and you add 4 and 5, leaving you with -2x + 9

Now that you have simplified both sides the problem now looks like this:

-2x - 10 = -2x + 9

Because you have equal terms on both sides (-2) those cancel out so you have -10 = 9

Just from looking at this we know that the statement is false because -1o does not equal 9

*The symbol, "≠" means not equal to"

3 0
3 years ago
Read 2 more answers
How do I find the perimeter of this ?
gavmur [86]

Answer:

26 is the perimeter

Step-by-step explanation:

you add all of the side numbers just like this:

9+5+12= 26 :)

     Hope this helped :D

3 0
3 years ago
Can u please help me prove those​
Alex Ar [27]

Answer:

ii

Step-by-step explanation:

A c A u B

B c A

Aç n Bc = Ac

What do you need to be explainer

6 0
3 years ago
There are20 keys on a keychain. One of the keys starts a car. If a key is randomly chosen what is the probability that it starts
pogonyaev
The answer is 5%........


7 0
3 years ago
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