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sineoko [7]
3 years ago
13

Bri opened a lemonade stand on her street. It costs her $11.00 to buy the supplies each day, and she sells lemonade for $2.00 a

cup. If she wants to make at least $75.00 in profits (sales - expenses) each day, what is the minimum number of cups of lemonade Bri needs to sell? Input your answer as a whole number.
Mathematics
1 answer:
antiseptic1488 [7]3 years ago
7 0

Answer:

Bri would need to sell a minimum of 43 cups of lemonade.

Step-by-step explanation:

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Plz plz help me look at the image
Dominik [7]

Answer:

10

Step-by-step explanation:

2(x + 4) = 28

(x + 4) =  \frac{28}{2}

x + 4 = 14

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x = 10

3 0
3 years ago
(1 point) Consider the function f(x)=2x3−9x2−60x+1 on the interval [−4,9]. Find the average or mean slope of the function on thi
OlgaM077 [116]

Answer: c = 4.97 and c = -1.97

Step-by-step explanation: <u>Mean Value Theorem</u> states if a function f(x) is continuous on interval [a,b] and differentiable on (a,b), there is at least one value c in the interval (a<c<b) such that:

f'(c) = \frac{f(b)-f(a)}{b-a}

So, for the function f(x) = 2x^{3}-9x^{2}-60x+1 on interval [-4,9]

f'(x) = 6x^{2}-18x-60

f(-4) = 2.(-4)^{3}-9.(-4)^{2}-60.(-4)+1

f(-4) = 113

f(9) = 2.(9)^{3}-9.(9)^{2}-60.(9)+1

f(9) = 100

Calculating average:

6c^{2}-18c-60 = \frac{100-113}{9-(-4)}

6c^{2}-18c-60 = -1

6c^{2}-18c-59 = 0

Resolving through Bhaskara:

c = \frac{18+\sqrt{1740} }{12}

c = \frac{18+41.71 }{12} = 4.97

c = \frac{18-41.71 }{12} = -1.97

<u>Both values of c exist inside the interval [-4,9], so both values are mean slope: c = 4.97 and c = -1.97</u>

7 0
4 years ago
Math Problem for math class
Eddi Din [679]

Answer:

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6 0
2 years ago
I need help with this.
ser-zykov [4K]

Answer:

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Step-by-step explanation:

Perimeter: z cm + 8 cm + (z+3) cm + (z+4) cm = z cm + (z+3) cm + (z+4) cm +8 cm = (3z + 7) cm + 8 cm = (3z+15) cm.

4 0
3 years ago
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sashaice [31]

Answer:

6.5

Step-by-step explanation:

7 0
3 years ago
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