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poizon [28]
4 years ago
9

Neeed help smart people were are you

Mathematics
1 answer:
Eduardwww [97]4 years ago
7 0
Answer to 3 is 441

answer to 4 is 12.4 (using pythagorem theorem which is A squared plus B squared equals C squared)
You might be interested in
1. what expression is equivalent to z+6z?
lisov135 [29]
1 is D, 2 I'm not sure, 3 is a and b, 4 is a.
3 0
3 years ago
Susan, Deon, and Goran have a total of $153 in their wallets. Goran has 4 times what Deon has. Deon has $9 less than Susan. How
yaroslaw [1]

Answer:

$153

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
It has been observed that a large percentage of professional hockey players have birthdays in the first part of the year. It has
vagabundo [1.1K]

Answer:

a

\mu  =  127

b

\sigma  =  9.76  

c

z-score  =  3.18

d

Yes, 158 players out of 508 is an unusual number of men born in the first 3 months of the year because the z score of 158  is  greater than  3( Note :the probability of  z-score = 3 is  97%)

e

The correct option is  option 3

Step-by-step explanation:

From the question we are told that

   The population proportion is  p =  0.25

   The sample size is  n =  508

   

Generally the mean is  mathematically represented as  

     \mu  =  np

=>   \mu  =  508 * 0.25

=>   \mu  =  127

Generally the standard deviation is mathematically represented as

     \sigma  =  \sqrt{ np (1-p)}

=>   \sigma  =  \sqrt{ 508 * 0.25 (1-0.25)}    

=>    \sigma  =  9.76  

Generally the z-score of  158 is mathematically represented as

    z-score  =  \frac{158 - 127}{9.76}

=>  z-score  =  \frac{158 - 127}{9.76}

=>  z-score  =  3.18

Yes, 158 players out of 508 is an unusual number of men born in the first 3 months of the year because the z score of 158  is  greater than  3( Note :the probability of  z-score = 3 is  97%)

What this means is that the almost the whole  professional hockey league player are born in the first month which is unusual

7 0
3 years ago
Can you help me with my work
coldgirl [10]

Answer:

1. 9 or -9

2. 3.6  or  -3.6

3. 12 and -12

4. The quadratic function has no real roots.

Step-by-step explanation:

1. Solve x² -81 = 0

x² -81 = 0

x² = 81

x = ±√81

x = 9      or   x = -9


2. solve 2x² - 26 = 0

 2x² - 26 = 0

2x² = 26

x² = 13

x = ±√13

∴ x = 3.6      or    x = -3.6


3. f(x) = x² - 144

let f(x) = 0

x² - 144 = 0

x² = 144

x = ±√144

x = 12   and  x = -12


4. f(x) = x² + 25

let f(x) = 0

x² + 25 = 0

x² = -25

x = ±√(-25)

There is no square root of a negative number. Its square is not a real number.

7 0
3 years ago
I NEED HELP NOWWWWW. PLEEEASSSE ANSWER QUICKLY WITH CORRECT ANSWER. WILL BE AWARDED WITH BRAINLIEST ANSWER.
Annette [7]

Answer:

The two angles mentioned are alternate interior angles, so they are congruent.

303 feet.

Step-by-step explanation:

If you draw off the flag you can see they are alternate interior and are congruent.

Also again, make a diagram it really helps a lot

:)

6 0
3 years ago
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