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zheka24 [161]
4 years ago
9

A contractor records the areas, in square feet, of a small sample of houses in a neighborhood to determine data about the neighb

orhood. They are:
2,400; 1,750; 1,900; 2,500; 2,250; 2,100
Which of the following represents the numerator in the calculation of variance and standard deviation?
a. (225)² + (-425)² + (-275)² + (325)² + (75)² + (-75)² = 423,750b. (650)² + (-150)²+(-600)² + (250)² + (150)² + (-300)² = 980,000c. (250)² + (-400)² + (-250)² + (350)² + (100)² + (-50)² = 420,000
Mathematics
2 answers:
taurus [48]4 years ago
6 0

Answer: C

Step-by-step explanation:

Just answered it

Gnesinka [82]4 years ago
4 0

Answer:

C on edge

Step-by-step explanation:

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^lets start off easy☺️^
butalik [34]

Answer:

mary=10 jack=15

Step-by-step explanation:

After 4 years Mary (x+4), Jack's age (x+5) + 4.

sum of the ages after 4 years :(x+4) + (x+5) +4=33 

Simplifying the equation:

2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age

10 + 5 = 15 which is Jack's age. 

7 0
3 years ago
So I am confused with the u^(1/2) and the -2u^(-1/2).
monitta
There's no real need to rationalize the denominator in the second term, since

\dfrac2{\sqrt u}=\dfrac2{u^{1/2}}=2u^{-1/2}

and this term is ready to be integrated via the power rule. Rationalizing doesn't really help here.
8 0
3 years ago
What is 479.79% as a decimal
Strike441 [17]
The answer would be 4.7979 because to find the answer you divide your percent by 100.
Hope this helped!!
5 0
4 years ago
Read 2 more answers
Andrew and Ryan spend a total of $44 at a state fair. There is an entrance fee of x dollars per person, and each ride costs $3.5
olya-2409 [2.1K]
N represent the number of rides each of them took

entrance fee for both of them = 2x
Total cost of rides = 2n x 3.50 = 7n

The total cost is 44
2x + 7n = 44 (Answer E)

2x + 7n = 44
2(x + 3.5n) = 44 (Answer C)


6 0
4 years ago
Read 2 more answers
The Sum of ages of kofi and akosua is
vlada-n [284]
I think the answer would be 16 and 13
6 0
3 years ago
Read 2 more answers
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