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iVinArrow [24]
3 years ago
8

35 POINTS PLS HELP WITH MATH (I post this like 3 times so you can get extra points by answering it again ;-;)

Mathematics
1 answer:
laila [671]3 years ago
8 0

Answer:

27.5 inches

Step-by-step explanation:

The formula for the volume of a pyramid is 1/3 * base area * height

Base area = 25 inches

Height = 3.3 inches

1/3 * 25 * 3.3 = 27.5

Hope it helps! :)

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Select the correct answer.
tigry1 [53]

Answer:

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

Step-by-step explanation:

Empirical Rule:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Population:

Mean $45.90, standard deviation $10.31.

Sample:

By the Central limit theorem, mean $45.90, standard deviation s = \frac{10.31}{\sqrt{400}} = \frac{10.31}{20} = 0.5155

Which interval can the branch manager be 95% certain that the sample mean will fall within?

By the Empirical Rule, within 2 standard deviations of the mean. So

45.90 - 2*0.5155 = $44.87

45.90 + 2*0.5155 = $46.93

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

6 0
2 years ago
Read 2 more answers
Solve each inequality.
olga_2 [115]
To solve each inequality, we can use different operations or transposition to simplify the equations or expressions given.
1. m - 7 < 6   m < 13
2. x + 4.5 ≥ 5.5   x  ≥ 1
3. p + 12 > 9    p > -3
8 0
4 years ago
Will give Brainliest if correct!
iren [92.7K]

Answer:

Add 2 to each next number

2 plus 2 is 4

4 plus 2 is 6

6 plus 2 is 8

4 0
3 years ago
Read 2 more answers
What is one point on a graph for the equation y=-3x-1 and how do we substitute it?
alukav5142 [94]

use the slope intercept equation to find the slope and the y intercept

y = mx-b

m = slope

b = y intercept

m is the number before the x so -3 is the slope

 and -1 is the y intercept

 so a point on the graph would be the y intercept at (0,-1)

5 0
3 years ago
What is the greatest perfect square that is a factor of 396? Explain
DedPeter [7]
<span>To find the greatest perfect square  that is a factor of 396, first we check what are the factors of 396
Factors of 396 are: 1,2,3,4,6,9,11,12,18,22,33,36,44,66,99,132,198,396
Now we check which is the greatest perfect square in these. 
396, 198, 132, 99, 66,44 are not perfect square,
so 36 is the largest perfect square from the factors of 396, 6 x 6 = 6</span>² = 36
4 0
3 years ago
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