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2 years ago

13

Question What is the answer

1 answer:

grigory [225]2 years ago

5 0

Answer:

0.0228, Hope that useful for you.

Step-by-step explanation:

Because of " the scores...normally distributed of a mean 310 and the standard deviation 12", we can use the Central limit theorem.

That means:

( $P(X>334)= P(\frac{X-E(X)}{SD(X)}>\frac{334-310}{12})= P(Z>2)= 1-P(Z\leq 2)= \\1- 0.9772= 0.0228$

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Lim->infinity 4n^2/n^2+10000n

dybincka [34]

<span>let P(n)=4n² / n²+10000n
when n ----------> infinity, the main rule is as follow
lim </span><span>P(n)=4n² / n²+10000n = lim </span>P(n)=4n² / n²= lim 4= 4
n ----------> infinity <span> n ----------> infinity </span><span>n ----------> infinity
finally
</span>
<span>Lim->infinity 4n^2/n^2+10000n = 4</span>

4 0

2 years ago

Solve the following equation:<br> 9n² - n - 2/3 = 0

KIM [24]

Answer:

see explanation

Step-by-step explanation:

Given

9n² - n - $\frac{2}{3}$ = 0 ← multiply through by 3 to clear the fraction

27n² - 3n - 2 = 0 ← factoring

Consider the factors of the product of the n² term and the constant term which sum to give the coefficient of the n- term

product = 27 × - 2 = - 54 and sum = - 3

The factors are - 9 and + 6

Use these factors to split the n- term

27n² - 9n + 6n - 2 = 0 ( factor the first/second and third/fourth terms )

9n(3n - 1) + 2(3n - 1) = 0 ← factor out (3n - 1) from each term

(3n - 1)(9n + 2) = 0

Equate each factor to zero and solve for n

3n - 1 = 0 ⇒ 3n = 1 ⇒ n = $\frac{1}{3}$

9n + 2 = 0 ⇒ 9n = - 2 ⇒ n = - $\frac{2}{9}$

3 0

2 years ago

Need help with a math probelm gvie 5 star if do

arsen [322]

Answer:

28 $units^{3}$

Step-by-step explanation:

21/2 * 8/3 = 28

3 0

1 year ago

How much is three half’s plus one fifth

Maslowich

Let's make it an expression.

Three half's= 3/2 Plus= + one fifth= 1/5

We need to turn 3/2 and 1/5 so that they have the same denominator. Let's use 10.

3/2→15/10 1/5→2/10

15/10+2/10=17/10=1 7/10

So, three half's plus one fifth is 1 7/10.

7 0

2 years ago

Read 2 more answers

What is less than 3.59 but greater than 3.572 fill in the blank 3.5 blank 1

lapo4ka [179]

Step-by-step explanation:

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4 0

3 years ago