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2 years ago

7. Cathy spent of an hour on her math homework,

Mathematics

2 answers:

zhannawk [14.2K]2 years ago

5 0

Answer:1 hour+1 hour+1 hour=3 hours

Step-by-step explanation:This is because she worked 1 hour on each homework.and there is 3 homework. Think is this way 3 groups of 1

1 1 1

3 homework and 1 hour each.

VashaNatasha [74]2 years ago

4 0

Answer:

3 hours or 180 minutes

Step-by-step explanation:

1 hour for math

1 hour for science

1 hour for reading

Equals 3 hours or 180 minutes

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Last year, a person wrote 126 checks. Let the random variable x represent the number of checks he wrote in one day, and assume

Arisa [49]

Answer: The mean number of checks written per day $=0.3452$

Standard deviation $=0.5875$

Variance $=0.3452$

Step-by-step explanation:

Given : The total number of checks wrote by person in a year = 126

Assume that the year is not a leap year.

Then 1 year = 365 days

Let the random variable x represent the number of checks he wrote in one day.

Then , the mean number of checks wrote by person each days id=s given by :-

$\lambda=\dfrac{126}{365}\approx0.3452$

Since , the distribution is Poisson distribution , then the variance must equal to the mean value i.e. $\sigma^2=\lambda=0.3452$

Standard deviation : $\sigma=\sqrt{0.3452}=0.5875372328\approx0.5875$

6 0

3 years ago

A test has 10 true/false questions. How many different tests can be turned in to the teacher?

Flauer [41]

The same as the greatest number that can be written
with 10 binary bits: <u>1,024</u>

3 0

2 years ago

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A store owner give 5% discount on all his bicycles. For a bicycle prices at $24,000 (without discount) he decides to give an add

stepladder [879]

Answer:

23999.98

Step-by-step explanation:

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2 years ago

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You want to rent a limousine for a trip to the city. The limo costs $700 for the night and $0.15 per mile. You have $750 to spen

mr Goodwill [35]

700+0.15m=750

(m is miles)

Hope this helps!! :)

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2 years ago

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Use properties to find the sum or product 93+(68+7)

Studentka2010 [4]

The answer would be:

93
+75
-------
168

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2 years ago