52 - 38 is 14
since on the second they sold one more child ticket then the first day we know the extra money is the price of a child ticket
so 14 is how much a child ticket is
if 3 senior citizen tickets but 14$ = 38
subtract 14 from38 = 24
and then 24/3 =senior ticket
child:14$
senior:8$
Answer:42
Step-by-step explanation:
2(3+6)+(8)(3)
=(2)(9)+(8)(3)
=18+(8)(3)
=18+24
=42
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The correct question is
<span>Yuri computes the mean and standard deviation for the sample data set 12, 14, 9, and 21. he finds the mean is 14. his steps for finding the standard deviation are below. what is the first error he made in computing the standard deviation
</span>
see the picture in the attached figure N 1we know that
The formula for Sample Standard Deviation is indicated in the attached figure N2
in this problem
n=4 and Yuri had to divide in the formula by 3
therefore
the answer is Yuri divided by n instead of n -1
Answer:
23.5
Step-by-step explanation:
Beacuse 235.55 and 10% equals 23.5
is the factored form of given polynomial 
<em><u>Solution:</u></em>
Given that we have to factor the given polynomial
Factoring: Finding what to multiply together to get an expression. It is like "splitting" an expression into a multiplication of simpler expressions.
<em>Factoring a polynomial involves writing it as a product of two or more polynomials</em>
Given polynomial is: 
Step 1 :
We can use factoring by grouping
Group
with 3xy and −12y with 9x then factor each group.

Taking -y as common term from first two terms and -3 as common term from last two terms

Now taking (4y - 3x) as common term

So the given polynomial is factored