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Gemiola [76]
3 years ago
14

The table shows the number of boys and girls that have black blonde brown or red hair color.

Mathematics
2 answers:
Naddik [55]3 years ago
5 0

Answer:

A) 0.23

Step-by-step explanation:

There are 9 black-haired students, out of 40 students.

9

40

= 0.23

skad [1K]3 years ago
3 0

Answer:

The answer would be A

Step-by-step explanation:

if you add the students that have only black hair and all the students together and put it as a fraction of black hair over total students, you get 9/41. you divide that and you get 0.219 and rounding you get 0.22 and the closest answer is A.

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Bianca has a paper route. She delivers 100 newspapers every 2 days. How many newspapers does she deliver in a week?
Vlad [161]

We know Bianca delivers 100 newspapers every 2 days.

So we must find out how many papers she delivers in 1 day.

100 ÷ 2 = 50

Bianca delivers 50 papers in 1 day.

Now we must multiply that by 7.

50 × 7 = 350

We get 350 papers per week.

The answer is 350.

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3 years ago
The explicit rule for a sequence and one of the specific terms is given. Find the position of the given
AlekseyPX

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14th term

Step-by-step explanation:

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A system of equations is shown below. Which of the following statements describes the graph of this system of equations in the (
katovenus [111]

Answer:

C

Step-by-step explanation:

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7 0
3 years ago
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IrinaVladis [17]

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3 years ago
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The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 250.8 and a standard deviation of
Iteru [2.4K]

Answer:

a) 68%; b) 99.5%

Step-by-step explanation:

The empirical rule states that 68% of data falls within 1 standard deviation of the mean; 95% of data falls within 2 standard deviations of the mean; and 99.7% of data falls within 3 standard deviations of the mean.

For part a,

We are asked the approximate percentage of women whose platelet counts are within 1 standard deviation of the mean.  According to the empirical rule, this is 68%.

For part b,

We are given the endpoints of the interval.  The lower endpoint is 181.5; this is 250.8-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

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The higher endpoint is 320.1; this is 320.1-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

This is standard deviations away from the mean.

This means this interval includes about 95% of women.

4 0
3 years ago
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