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Rufina [12.5K]
3 years ago
13

The equation d = 22.5n + 27.5 represents the amount of money, in dollars, that Kathryn earns for each sale she makes. The variab

le n represents the number of items sold, and the variable d represents the total amount of money earned.
What is the number of items Kathryn must sell in order to earn $500?




A)10


B)17


C)21


D)23
Mathematics
2 answers:
-Dominant- [34]3 years ago
6 0

Answer:

The answer is C

Step-by-step explanation:

If you use inverse operations and do 500-27.5=472.5 and ÷ that by 22.5 you will get 21. If you wanted to check it you can do 22.5×21+27.5=500

Hope that helps

egoroff_w [7]3 years ago
5 0
The answer is c. I think not really sure
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The population of Canada is 3.5×10^7, and the population of the world is 7.0×10^9. How many times larger is the population of th
Setler [38]

Answer:

The population of the world is 200 times of the population of Canada.

Step-by-step explanation:

Given that,

Canada's population = 3.5\times 10^7

The population of world =  7.0\times 10^9

We need to find how many times larger is the population of the world compared to Canada's population. It can be solved as follows :

\dfrac{W}{C}=\dfrac{7.0\times 10^9}{3.5\times 10^7}\\\\\dfrac{W}{C}=200\\\\W=200C

So, the population of the world is 200 times of the population of Canada.

3 0
3 years ago
17
neonofarm [45]
<h3>Answer:  Choice B.  5*sqrt(10)</h3>

==========================================================

Explanation:

It helps to add point labels. Let's place point A at the very top point of the triangle. Then point B will be at the 90 degree angle. Point C is the far left point. Lastly, point D is on segment BC such that DC = 3.

Since BC = 8 and CA = 17, we can use the pythagorean theorem to get...

(AB)^2 + (BC)^2 = (AC)^2

(AB)^2 + (8)^2 = (17)^2

(AB)^2 + 64 = 289

(AB)^2 = 289-64

(AB)^2 = 225

AB = sqrt(225)

AB = 15

Now focus on triangle ABD and apply the pythagorean theorem again to find side AD

(AB)^2 + (BD)^2 = (AD)^2

AD = sqrt(  (AB)^2 + (BD)^2  )

AD = sqrt(  (AB)^2 + (BC-CD)^2  )

AD = sqrt( (15)^2 + (8-3)^2 )

AD = sqrt(250)

AD = sqrt(25*10)

AD = sqrt(25)*sqrt(10)

AD = 5*sqrt(10) .... answer is choice B

8 0
3 years ago
Telly Savalas owns the Bonita Barber Shop. He employs four barbers and pays
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Step-by-step explanation:

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4 years ago
Rewrite 38/7 as a mixed number. 5 3/7 3 8/7 3 7/8 5 4/7
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Answer:

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Step-by-step explanation:

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The corporate headquarters of Bank, an online banking company, is located in downtown Philadelphia. The director of human resour
amid [387]

Answer:

Public :

Q1 = 27.5

Q2 = 31.5

Q3 = 36

Private:

Q1 = 33.5

Q2 = 37.5

Q3 = 38.5

Step-by-step explanation:

Given the data:

Public Transportation

23 25 25 30 31 31 32 33 35 38 37 42 ;

Rearranged data :

23, 25, 25, 30, 31, 31, 32, 33, 35, 37, 38, 42

Median :

1/2(n+1)th term

n = sample size = 12

1/2(13)th term = 6.5th term

(6th + 7th)/ 2

(31 + 32) / 2 = 31.5

1st quartile :

1/4(n + 1)th term

1/4(13) th term.

Q1 = 27.5

3rd quartile :

3/4(n + 1)th term

3/4(13) th term.

Q3 = (25 + 37) / 2 = 36

Private

32 32 33 34 37 37 38 38 38 39 40 44

Rearranged data:

32, 32, 33, 34, 37, 37, 38, 38, 38, 39, 40, 44

Median :

1/2(n+1)th term

n = sample size = 12

1/2(13)th term = 6.5th term

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1st quartile :

1/4(n + 1)th term

1/4(13) th term.

Q1 = 33.5

3rd quartile :

3/4(n + 1)th term

3/4(13) th term.

Q3  = 38.5

7 0
3 years ago
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