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3 years ago

Tyson says the value of the expression 6 + 9 ÷ 3 × 7 is 35.

Mathematics

1 answer:

frosja888 [35]3 years ago

4 0

Answer:

The order

Parentheses

Exponents

Division and multiplication (whichever is the further to the left goes first)

Addition and subtraction (same rules apply)

First would be 9/3=3

second would be 3x7=21

third would be 6+21=27

Step-by-step explanation:

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3 years ago

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Irina18 [472]

Answer:

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Step-by-step explanation:

for the square i dont know

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2 years ago

Suppose in the University of Manitoba, 40% of the students live in apartments. If 600 students are randomly selected, then the a

just olya [345]

Answer:

$P(200\leq X\leq 400)=P(\frac{200-240}{12}\leq \frac{X-\mu}{\sigma}\leq \frac{400-240}{12})=P(-3.33\leq Z \leq 13.33)$

$=P(Z$

So then the correct answer would be:

B) .9996

Step-by-step explanation:

The exact way to solve this problem is using the binomial distribution, assuming that our random variable of interest is "number of students living in apartments" represented by X and $X \sim Bin(n=600, p =0.4)$

And we want this probability:

$P(200 \leq X \leq 400) [tex]In order to find this probability we can use the foloowing excel code:"=BINOM.DIST(400,600,0.4,TRUE)-BINOM.DIST(199,600,0.4,TRUE)"And we got:[tex] P(200 \leq X \leq 400) =0.999675[tex]But for this case the problem says that we need to approximate, so then we can use the normal approximation to the normal distribution. We need to check the conditions in order to use the normal approximation.
[tex]np=600*0.4=240\geq 10$