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3 years ago

Helppppppppppppppppppppppp

Mathematics

2 answers:

natima [27]3 years ago

7 0

Answer:

T4 - 8 or 4t - 8

Step-by-step explanation:

I don’t know why ur answer is wrong but maybe try t4 - 8 or maybe if it’s the answer try 4t - 8

lord [1]3 years ago

5 0

Answer:

sorry for this

I m only collecting points

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Use the given sample data to construct the indicated confidence interval for the population mean. The principal randomly selecte

Lunna [17]

Answer:

The 90% confidence interval

(74.71, 82.63)

Step-by-step explanation:

Confidence Interval Formula is given as:

Confidence Interval = μ ± z (σ/√n)

Where

μ = mean score

z = z score

N = number of the population

σ = standard deviation

The mean is calculated as = The average of their scores

N = 6 students

(71.6 + 81.0 + 88.9 + 80.4 + 78.1 + 72.0 )/ 6

Mean score = 472/6

= 78.666666667

≈ 78.67

We are given a confidence interval of 90% therefore the

z score = 1.645

Standard Deviation for the scores =

s=(x -σ)²/ n - 1 =(71.6 - 78.67)²+(81.0 - 78.67)²+(88.9 - 78.67)² + (80.4 - 78.67)²+ (78.1 - 78.67)²+( 72.0 - 78.67)2/ 6 - 1

= 5.886047531

= 5.89

The confidence interval is calculated as

= μ ± z (σ/√N)

= 78.67 ± 1.645(5.89/√6)

= 78.67 ± 3.9555380987

The 90% confidence interval

is :

78.67 + 3.9555380987 = 82.625538099

78.67 - 3.9555380987 = 74.714619013

Therefore, the confidence interval is approximately between

(74.71, 82.63)

3 0

3 years ago

Explain how comparing 645 and 738 different from comparing 645 and 649

pantera1 [17]

For 645 and 738:
For these numbers we have that the difference between both is:
738 - 645 = 93

For 645 and 649:
For these numbers we have that the difference between both is:
649 - 645 = 4

Therefore, comparing the first two numbers of the second two numbers is different because the difference between the first two numbers is much larger.

Answer:
The difference between the first two numbers is much greater than the difference between the second two numbers.

8 0

4 years ago

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Show 713.65 in expanded notation

Nat2105 [25]

Answer:

713.65 = (7 x 100) + (1 x 10) + (3 x 1) + (6/10) + (5/100)

Step-by-step explanation:

5 0

3 years ago

Someone help with this question ?????? Hi

8090 [49]

ANSWER

The second statement is the contrapositive of the first.

EXPLANATION

If we have the conditional statement,

$x\Rightarrow \: y$

Then the converse of this statement is
$y\Rightarrow \: x$

The inverse of this statement is
$\neg \: x\Rightarrow \neg \: y$

and the contrapositive of this statement is
$\neg \: y\Rightarrow \neg \: x$

The correct answer is C.

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3 years ago

Isabel joins a service to download movies. She pays $2 per movie, but she gets the first 5 movies for free. How many movies, m,

Damm [24]

The first question the answer to it is 30.

To do that divide 50/2 and see how many movies she can buy, which 25, then add the 5 free movies which gives you 30.

And the second part of the question I think is missing a picture or something.

3 0

4 years ago

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