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Lemur [1.5K]
4 years ago
14

Customers of a phone company can choose between two servers plans for a long-distance calls. The first plant has $27 monthly fee

and charges an additional $0.07 for each minute of calls. The second plan has no monthly fee but charges $0.11 for each minute of calls. For how many minutes of calls with the cost of the two plans be equal?

Mathematics
1 answer:
Marina86 [1]4 years ago
7 0
First, you set up your equation then you put the pieces together to get the answer

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Yes because it has all the variables you need.

8 0
4 years ago
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Leokris [45]

Answer:

300

Step-by-step explanation:

To find the number of pamphlets we use the following:

NumberOfPamplets=\frac{TotalBudget}{CostPerPamphlet}

we divide the total budget by the cost per pamphlet and then we will know how many of them he can make.

the total budget is:

TotalBudget=3,000

and the cost per pamphlet:

CostPerPamphlet=10

so we make the division:

NumberOfPamphlets=\frac{3,000}{10}\\ NumberOfPamphlets=300

The senator can make 300 pamphlets with the budget that he has.

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3 years ago
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kifflom [539]

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6 0
3 years ago
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A circular cylindrical container, open at the top, and having a capacity of 24pi cubic inches, is to be manufactured. If the cos
otez555 [7]

Answer: radius r = 2 inches

height h = 6 inches

Step-by-step explanation:

Given;

Volume V = 24πin3

Volume of a cylinder is given by

V = πr^2h

h = V/πr^2. ....1

Where, h = height and r = radius of cylinder

For the surface area of the cylinder with open top. we have,

S = 2πrh + πr^2

For the cost of materials used, let k represent the cost of materials used for the body of the cylinder.

Then, for the bottom will be 3k

Total cost will be represented by C, which gives

C = 2πrhk + 3πr^2k. .....2

Substituting eqn 1 to 2, we have;

C = 2πrVk/πr^2 + 3πr^2k

C = 2Vk/r + 3πr^2k

The material cost is minimum at dC/dr = 0

dC/dr = -2Vk/r^2 + 6πrk =0

6πrk = 2Vk/r^2

r^3 = 2V/6π

r = (2×24π/6π)^-3

r = (8)^-3

r = 2

Substituting r = 2 into eqn1

h = 24π/π(2^2)

h = 24/4 = 6

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5 0
4 years ago
-5x+13y=-7 what does y equal?
mart [117]
Here you go I hope this right hope it help

5 0
4 years ago
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