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Nana76 [90]
3 years ago
9

A soccer team is selling doughnuts to raise money for new uniforms. They are selling the doughnuts for $8 per dozen. They must p

ay Delightful Donuts $2 per dozen doughnuts and a $20 delivery fee for the doughnuts purchased to sell. Choose the function that represents a Profit Function. Select all that apply.
Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
7 0

Answer:

P(x)=8x-20

P(x)=8x-(2x+20(

Step-by-step explanation:

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I need help with this question. Can someone please help me with it. Thanks in advance
trasher [3.6K]
Okay, 72 degrees is equal to (5x-98), so
72=5x-98
5x=170
x=34

So now that we know that x=34, we can put 34 into (5x-98), so 170-98
170-98 and y are supplementary, so they add up to 180 degrees. So the equation is 
170-98+y=180
72+y=180
y=180-72
y=108
8 0
3 years ago
Noah bought 15 baseball cards for $9.00.Assuming each baseball cards costs the same amount, how much will 12 baseball cards cost
Anastasy [175]

First, we find how much 1 baseballs card costs.

1 card = 0.60

12*0.6 = $7.20

4 0
3 years ago
Read 2 more answers
Find the roots of h(t) = (139kt)^2 − 69t + 80
Sonbull [250]

Answer:

The positive value of k will result in exactly one real root is approximately 0.028.

Step-by-step explanation:

Let h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80, roots are those values of t so that h(t) = 0. That is:

19321\cdot k^{2}\cdot t^{2}-69\cdot t + 80=0 (1)

Roots are determined analytically by the Quadratic Formula:

t = \frac{69\pm \sqrt{4761-6182720\cdot k^{2} }}{38642}

t = \frac{69}{38642} \pm \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }

The smaller root is t = \frac{69}{38642} - \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }, and the larger root is t = \frac{69}{38642} + \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }.

h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80 has one real root when \frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} = 0. Then, we solve the discriminant for k:

\frac{80\cdot k^{2}}{19321} = \frac{4761}{1493204164}

k \approx \pm 0.028

The positive value of k will result in exactly one real root is approximately 0.028.

7 0
2 years ago
Nine times the difference of a number and one is equal to seven less than two times the number
Oksana_A [137]
9*(x-1)=2x-7
First get rid of your parenthesis by distributing. 
9x-9=2x-7
Then all you have to do is isolate the variable
9x=2x+2
7x=2
so x= 2/7


8 0
3 years ago
There are 7 students in a class: 5 boys and 2 girls.
iren [92.7K]
3/7 is the answer for this question
3 0
3 years ago
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