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2 years ago

Please help! 420+69 I really need help. please answer.

Mathematics

2 answers:

balandron [24]2 years ago

6 0

Answer:

42069 bro, zxckvhkljwehiofndsf dzvzcx

malfutka [58]2 years ago

4 0

Answer: the answer is 489

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In a recent year, a sample of grade 8 Washington State public school students taking a mathematics assessment test had a mean sc

Daniel [21]

Answer:

The number is $N =1147$ students

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 281$

The standard deviation is $\sigma = 34.4$

The sample size is n = 2000

percentage of the would you expect to have a score between 250 and 305 is mathematically represented as

$P(250 < X < 305 ) = P(\frac{ 250 - 281}{34.4 } < \frac{X - \mu }{\sigma } < \frac{ 305 - 281}{34.4 } )$

Generally

$\frac{X - \mu }{\sigma } = Z (Standardized \ value \ of \ X )$

$P(250 < X < 305 ) = P(-0.9012< Z$

$P(250 < X < 305 ) = P(z_2 < 0.698 ) - P(z_1 < -0.9012)$

From the z table the value of $P( z_2 < 0.698) = 0.75741$

and $P(z_1 < -0.9012) = 0.18374$

$P(250 < X < 305 ) = 0.75741 - 0.18374$

$P(250 < X < 305 ) = 0.57$

The percentage is $P(250 < X < 305 ) = 57\%$

The number of students that will get this score is

$N = 2000 * 0.57$

$N =1147$

6 0

3 years ago

Can someone answer A

Gemiola [76]

A.
that is changge per year

you do change/years=11150000/10=1115000
the mean change ws 1115000 visitors per year

B. it can be negative if the change was massivly negative to offset the 10800000 visitor increase

5 0

3 years ago

F.O.I.L

user100 [1]

If you are talking about what is in between the two sets of parentheses then the answer would be multiplication hope that helped

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3 years ago

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Compare: 1.6 x 10^-5 and 1.62 x 104^-4<br> A) ><br> B) <<br> C) =<br> D) none of the above

Andru [333]

The correct answer is d

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3 years ago

Cheryl has some oranges. She puts the oranges into p boxes of 3 oranges each and has 2 oranges left. Find the total number of or

adelina 88 [10]

So 3 oranges per box and p boxes so
3 times p or 3p

then it didn't divide evenly so the remainder was 2
3p+2

this was the total
3p+2

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3 years ago

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