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disa [49]
2 years ago
10

11. A notebook costs $5 more than a folder. Greg purchased 3 notebooks and 2 folders and paid a total cost $30. What is the cost

of each item? 11. A notebook costs $ 5 more than a folder . Greg purchased 3 notebooks and 2 folders and paid a total cost $ 30 . What is the cost of each item ?​
Mathematics
1 answer:
goblinko [34]2 years ago
3 0

Answer:

Notebook: 5$ each. Folder: 7.50$ each.

Step-by-step explanation:

A notebook costs 5$ more than a folder, and 3 notebooks were purchased, so we can safely say that at least 15$ was spent on notebooks. Then, take the remaining number after subtracting 15 from 30 and divide it by 2, assuming all of the folders are the same price.

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The measure of an angle is 108°. What is the measure of a supplementary angle?
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Answer:

72 degrees

Step-by-step explanation:

180-108=72

where I got 180: a supplementary angle is 180 degrees

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Y-5=6(x-7)<br><br> A. (5,7)<br> B. (7,5)<br> C. (-7,-5)<br> D. (-5,-7)
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Answer:

B

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3 years ago
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The linear model represents the height, f(x), of a water balloon thrown off the roof of a building over time, x, measured in sec
vlada-n [284]

Answer:

A)0 sec to 2 sec

B) 2 sec - 3 sec.

C)During 3 to 4  secs water balloon's height decreasing the fastest

D)The height of the water balloon at 16 seconds is 0

Step-by-step explanation:

Given : A linear model with ordered pairs at 0, 60 and 2, 80 and 3, 80 and 4, 20 and 6, 0 and 7, 0 and 8, 0. The x axis is labeled Time in seconds, and the y axis is labeled Height in feet.

x            y

0          60

2          80

3          80

4          20

6          0

7          0

8          0

A) During what interval(s) of the domain is the water balloon's height increasing

We can refer the table balloon height increasing from 60 to 80 and then starts decreasing

So, interval = 0 sec to 2 seconds

So, interval(s) of the domain is the water balloon's height increasing  is 0 sec to 2 sec

B) During what interval(s) of the domain is the water balloon's height staying the same

We can see that for 2  to 3  secs the height of the balloon is remaining same 80

So, interval(s) of the domain is the water balloon's height staying the same  is 2 sec - 3 sec.

C)During what interval(s) of the domain is the water balloon's height decreasing the fastest

During 3 to 4  - Decrease =\frac{60}{1}= 60 ft/s

During 4 to 6  - Decrease = \frac{20}{2}= 10 ft/sec  

During 3 to 4  secs water balloon's height decreasing the fastest

D: Use the constraints of the real-world situation to predict the height of the water balloon at 16 seconds

After 6 secs balloon has reached ground so it will remain on ground

Hence  the height of the water balloon at 16 seconds is 0

4 0
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Answer:

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=(5/6) pages/minute

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