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3 years ago

Which shape has 4 square

Mathematics

2 answers:

maks197457 [2]3 years ago

5 0

Answer:

ummmm a triangle?

Step-by-step explanation:

LIke i dont know, kinda reminds me of my x never knew how to- never mind. Like just put traingle or whatever

zheka24 [161]3 years ago

4 0

Answer:

it is indeed the square

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Mr. Brutry ordered 78 pencils for the students in his class. He ordered enough pencils for each student to have exactly 3

alina1380 [7]

Answer:

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Step-by-step explanation:

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3 years ago

The mean cost of a five pound bag of shrimp is 40 dollars with a standard deviation of 7 dollars. If a sample of 51 bags of shri

eimsori [14]

Answer:

$P(|\bar{x}-40| > 0.6)=0.5404$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 40 dollars

Standard Deviation, σ = 7 dollars

Sample size,n = 51

We are given that the distribution of cost of shrimp is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{7}{\sqrt{51}} = 0.9801$

P(sample mean would differ by true mean by more than 0.6)

$P(|\bar{x}-40| > 0.6)\\\Rightarrow = 1-P(39.4$

$P(39.4 \leq x \leq 40.6) \\\\= P(\displaystyle\frac{39.4 - 40}{0.9801} \leq z \leq \displaystyle\frac{40.6-40}{0.9801})\\\\ = P(-0.6121 \leq z \leq 0.6121)\\= P(z \leq 0.6121) - P(z < -0.6121)\\= 0.7298 - 0.2702 =0.4596$

$P(|\bar{x}|-40 > 0.6)\\= 1-0.4596=0.5404$

0.5404 is the required probability.

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3 years ago

What is the sum of (x ^ 2 - 3x + 2) and (5x ^ 2 - 3x - 8)

geniusboy [140]

Answer:

6x^2-6x-6

Step-by-step explanation:

(x^2-3x+2)+(5x^2-3x-8)

x^2+5x^2-3x+(-3x)+2+(-8)

6x^2-3x-3x+2-8

6x^2-6x+2-8

6x^2-6x-6

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2 years ago