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3 years ago

What does about mean in math? do you round or just add or subtract?

Mathematics

2 answers:

Zanzabum3 years ago

4 0

About normally means rounded up or down, not exact but approximate.

steposvetlana [31]3 years ago

3 0

About means you just estimate the answer

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Maria ran 100 yards in 13.8 seconds.mike ran 1 second slower then Maria. How long did it take mike to run 100 yards?

Allisa [31]

Answer:

12.8 seconds

Step-by-step explanation:

13.8-1=12.8.... unless I'm wrong?

5 0

3 years ago

Rabies is an often-fatal disease typically transmitted through the bite of an infected animal. The state of Florida has been rec

slega [8]

Answer:

a) 3.6

b) 1.897

c)0.0273

d) 0.9727

Step-by-step explanation:

Rabies has a rare occurrence and we can assume that events are independent. So, X the count of rabies cases reported in a given week is a Poisson random variable with μ=3.6.

The mean of a Poisson random variable X is μ.

mean=E(X)=μ=3.6.

The standard deviation of a Poisson random variable X is √μ.

standard deviation=S.D(X)=√μ=√3.6=1.897.

The probability for Poisson random variable X can be calculated as

P(X=x)=(e^-μ)(μ^x)/x!

where x=0,1,2,3,...

So,

P(no case of rabies)=P(X=0)=e^-3.6(3.6^0)/0!

P(no case of rabies)=P(X=0)=0.0273.

P(at least one case of rabies)=P(X≥1)=1-P(X<1)=1-P(X=0)

P(at least one case of rabies)=1-0.0273=0.9727

8 0

2 years ago

What do you say when you see an empty parrot cage?

irina1246 [14]

Oh no my parrot is missing

5 0

3 years ago

Angles 1 and 2 are complementary. If angle 1 = 35, then what is the measure of angle 2?

enot [183]

Answer:

doge

Step-by-step explanation:

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4 0

2 years ago

??????????????????????????

ser-zykov [4K]

Answer:

Step-by-step explanation:

so they used a total of 560 units

we are next told that if the units of usage are 360 or less use the 1st formula, but there is morn than 360 units in the given amount so use the 2nd formula

0.1(x-360+54)

0.1(560-360) + 54 = monthly bill

20+54 = monthly bill

74 = monthly bill

answer D looks good

3 0

3 years ago