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2 years ago

20PTS Question On Pic Thx

Mathematics

2 answers:

Reika [66]2 years ago

7 0

Answer:

(a) 3800

(b) April to May

Step-by-step explanation:

(a)

Let's list the donations per month:

April : 4300
May : 3800
June : 4100
July : 4000
August : 4400

The least ever donated was 3800, and this happened in May

(b)

Let's list the changes per month:

April to May : -500
May to June : +400
June to July : -100
July to August : +400

The greatest decrease was between April to May

-Chetan K

harina [27]2 years ago

6 0

Answer:

(a) $3800

(b) (a) -- April to May

Step-by-step explanation:

The least amount is found at the lowest point on the graph. That point is in May. It is on the line between 3700 and 3900, so the amount is $3800.

The least donation amount is a month is $3800.

The greatest month-to-month decrease is found where the line on the graph has the steepest negative slope. There are two segments with negative slope:

April - May (decrease of $500)
June - July (decrease of $100)

The decrease from April to May is by far the largest of these two decreases.

The greatest decrease occurred April to May.

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The mean of the commute time to work for a resident of a certain city is 27.3 minutes. Assume that the standard deviation of the

posledela

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Mean commute time (m) = 27.3 minutes

Standard deviation (sd) = 7.1 minutes

a) What minimum percentage of commuters in the city has a commute time within 2 standard deviations of the mean?

Using chebyshev's theorem ;

No more than 1/k² values of a distribution can be

k standard deviations from the mean.

Here k = 2

Hence,

1/k² = 1/2² = 1/4 = 0.25

Hence, minimum percentage of commmuters within 2 standard deviations of the mean :

1 - 0.25 = 0.75 m

B.) What minimum percentage of commuters in the city has a commute time within 1.5 standard deviations of the mean?

Here, k = 1.5

1/k² = 1/1.5² = 1/2.25 = 0.444

Hence, minimum commute time within 2 standard deviations of the mean :

1 - 0.444 = 0.56 = 56%

Commute time within 1.5 standard deviation

[27.3 - (1.5 × 7.1), 27.3 + (1.5 * 7.1)

[16.65, 37.95]

C.) What is the minimum percentage of commuters who have commute times between 6minutes and 48.6 minutes?

X - m /sd

X = 6

= (6 - 27.3) / 7.1 = - 3

X = 48.6

= (48.6 - 27.3) / 7. 1 = 3

Hence,

1/k² = 1 / 3² = 1/9

1 - 1/9 = 8/9

= 0.888 = 0.89 = 89%

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4 years ago

noa buys 6 items that each cost 4.25 and 3 items that each cost 6.75. How much does noa spend in total

Elena L [17]

Answer:

$45.75

Step-by-step explanation:

6 * 4.25 = 25.5

3 * 6.75 = 20.25

25.5 + 20.25 = 45.75

Best of Luck!

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3 years ago

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The screen on Lawrence’s new phone is 3.15 centimeters long. What mixed number represents the length of the phone screen?

notsponge [240]

Answer:

3 and 3/20

Step-by-step explanation:

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3 years ago

Question is provided in the picture! please provide the work too! thanks (: ASAP

ANTONII [103]

Answer:

the answer is -10 over 21

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3 years ago

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On a recent day 8 euros were worth 9 dollars and 24 euros were worth 24 dollars write an equation of the form y = kx

slavikrds [6]

<h3><u>Question:</u></h3>

On a recent day, 8 euros were worth $9 and 24 euros were worth $27. Write an equation of the form y = kx to show the relationship between the number of euros and the value in dollars.

<h3><u>Answer:</u></h3>

y = 1.125x is the equation to show the relationship between the number of euros and the value in dollars.

<h3><u>Solution:</u></h3>

Given that On a recent day 8 euros were worth 9 dollars and 24 euros were worth 24 dollars

Let "y" be the value in dollars

Let "x" be the number of euros

We have to write a equation in form of y = kx

<em><u>8 euros were worth 9 dollars</u></em>

"k" is found as follows:

$k = \frac{\text{value in dollars}}{\text{number of dollars}}$