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timofeeve [1]
3 years ago
12

Greg practiced playing his clarinet for 12 minutes. He has practiced 40% of the amount of time he needs to practiced today. How

many more minutes does Greg need to practice today?
Mathematics
1 answer:
frosja888 [35]3 years ago
4 0
He needs to practice 7.2 minutes
he practices for 4.8 minutes in that day

hope this helps
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The pep club and honor society are joining forces to raise money for school improvements.
Fittoniya [83]

Answer:

Part a) The graph in the attached figure

Part b) see the explanation

Part c) see the explanation

Step-by-step explanation:

Let

x ----> represent pep club donations

y ---> represent donations raised by the honor society

we have

x+y\geq 500 ----> inequality A

The solution of the inequality A is the shaded area above the solid line x+y=500

x\geq 100 ----> inequality B

The solution of the inequality B is the shaded area at right of the solid line x=100

Part a) Graph the system of inequalities

using a graphing tool

The solution of the system of inequalities is the shaded area

Remember that the variables x and y cannot be a negative number

see the attached figure

Part b) What does the point (300,100) represent? Is it a viable solution?

The point (300,100) means that the donations raised for pep club  was $300 and the donations raised by the honor society was $100

The point  (300,100) is not a viable solution, because the point not belong to the shaded area of the solution of the system of inequalities

<u><em>Verify</em></u>

If the ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequality  

For x=300, y=100  

<em>Inequality A</em>

300+100\geq 500      

400\geq 500  ----> is not true

The ordered pair not satisfy the inequality A

therefore

The point (300,100) is not a viable solution  

Part c) What does the point (500,200) represent? Is it a viable solution?

The point (500,200) means that the donations raised for pep club  was $500 and the donations raised by the honor society was $200

The point  (500,200) is a viable solution, because the point belong to the shaded area of the solution of the system of inequalities

<u><em>Verify</em></u>

If the ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequality  

For x=500, y=200  

<em>Inequality A</em>

500+200\geq 500      

700\geq 500  ----> is true

The ordered pair satisfy the inequality A

<em>Inequality B</em>

500\geq 100 ---> is true

The ordered pair satisfy the inequality B

therefore

The point (500,200) is a viable solution  

3 0
3 years ago
If (-2/15)+(-13/5)=(-13/5)+a/b then a/b is equal to​
stellarik [79]

The choose C. –2/15

(-2/15) +(-13/5) =(-13/5) +a/b

a/b = (-2/15)+(-13/5) - (-13/5)

a/b = (-2/15) - ( 39/15) +(39/15)

a/b = –2/15

I hope I helped you ^_^

6 0
2 years ago
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1 bru just making this up bend
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Find the value of x and y. **Hint y is a fraction**<br> Write answers as simplified radicals.
dedylja [7]
Why you're still finding your X and questioning Y she's happy now.
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a butterfly flies 1/2 of a foot in 5/6 of a minute (a) how far will the butterfly travel in one minute
Westkost [7]

If you divide them together then you get the answer which is 10/6 or 5/3


6 0
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