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anygoal [31]
3 years ago
12

349 times 3 expanded form

Mathematics
1 answer:
kozerog [31]3 years ago
7 0

Answer:

1000 + 40 + 7

Step-by-step explanation:

MULTIPLY:

349 times 3 = 1,047

EXPANDED FORM:

1000 + 40 + 7

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The blood type O negative is called the "universal donor" type because it is the only blood type that may safely be transfused i
dexar [7]

Answer:

Probability that fewer than three of them will have type O negative blood: P(x<3)=0.6047

Probability that more than 4 of them have type O negative blood: P(x>4)=0.0472

Probability that none of the donors had type O negative blood: P(x=0)=0.2342

Mean of the number of donors who have type O negative blood for a group this size: E=1

Standard deviation of the number of donors who have type O negative blood for a group this size: SD=2

Step-by-step explanation:

These experiments behave as binomial distribution:

P(x)=\frac{n!}{x!(n-x)!}. p^x.(1-p)^{n-x}

where:

x: donors have type O negative blood

p: success outcome (0.07)

n: unrelated donors (20)

<u>Fewer than three donors will have type O negative blood:</u>

P(x<3)=P(x=0)+P(x=1)+P(x=2)=\frac{20!}{0!(20-0)!}. (0.07)^0.(1-0.07)^{20-0}+\frac{20!}{1!(20-1)!}. (0.07)^1.(1-0.07)^{20-1}+\frac{20!}{2!(20-2)!}. (0.07)^2.(1-0.07)^{20-2}}

P(x<3)=0.2342+0.3526+0.2521=0.8389

<u>More than 4 of donors have type O negative blood:</u>

P(x>4)=1-P(x<4)= 1 - P(x=0) - P(x=1) - P(x=2) - P(x=3)= 1 - 0.2342 - 0.3526 - 0.2521 - 0.1139=0.0472

<u>None of the donors had type O negative blood:</u>

P(x=0)=\frac{20!}{0!(20-0)!}. (0.07)^0.(1-0.07)^{20-0}=0.2342

Mean of the number of donors who have type O negative blood:

E=n×p=20×0.07=1.4≅1

The mean number of donors that have type O negative blood is 1.

Standard deviation of the number of donors who have type O negative blood:

SD=\sqrt{npq}=\sqrt{20*0.07*0.93}=1.5≅2

The standard deviation of the distribution of donors that have type O negative blood is 2.

6 0
3 years ago
Complete the two-way frequency table below. The table shows that, of 40 students in a physical education class, 16 play football
Elza [17]

i tried working this out but it doesnt make sense, at least the table doesnt... did you make this question up or get it off of a school assignment??

8 0
3 years ago
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Is x great thank, less than or equal to 146
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Answer:

i think its less than

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Las medidas interiores de una piscina portátil cilíndrica son 0.85 m de radio y 0.60 m de altura.
AURORKA [14]

Answer:

es ovio

Step-by-step explanation:

investiga xd xd xd

7 0
2 years ago
Solve 64-31-3.64 + 22 = 38
professor190 [17]

Answer:

51.36=38

Step-by-step explanation:

You apply all these together:

64-31-3.64 + 22=51.36

51.36=38

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