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Monica [59]
3 years ago
15

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

and charges an additional $0.12 for each minute of calls. The second plan has no monthly fee but charges $0.16 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
Mathematics
1 answer:
NikAS [45]3 years ago
4 0
The first plan : y = 27 + 0.12x
Second plan : y = 0.16x

27 + 0.12x= 0.16x
27 = 0.04x

x = 67.5 minutes
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8 0
3 years ago
Country A produces eight times the amount of diamonds in carats produced in country B. If the total produced in both countries i
iren [92.7K]

Answer:

A=8,000,000

B=1,000,000

Step-by-step explanation:

A=8B

A+B=9,000,000

8B(because A=8B)+B=9,000,000

9B=9,000,000

B=1,000,000

A=8*B=8*1,000,000=8,000,000

6 0
3 years ago
Nine times the sum of a number and 4 is 2
Anna11 [10]

Answer(s):

If you are asking for the equation, it's 9(x+4)=2

However, if you're asking for the value of x as well, it's -34/9

Step by Step:

1) First we must find the equation. In your question, the unknown number is x. Therefore we can know that "the sum of a number and 4" is (x+4). Since we are multiplying this sum by 9, we can put the 9 in front of this expression to multiply it--getting 9(x+4). And since we know it "is 2" we can say that 9(x+4)=2.

2) Now, we have to solve the equation, 9(x+4) = 2

3) We can start by distributing, 9x+36 = 2

4) Now let's move 36 to the right by subtracting from both sides, 9x = -34

5) To isolate x, let's divide both sides by 9, x = -34/9

6) Our fraction answer can't be simplified, so we get x = -34/9

7 0
3 years ago
Calculate the perimeter of the regular hexagon which has 8 sides <br><br> Pls help I’m stuck
snow_lady [41]
6+6+6+6+6+6+6+6= 48

The perimeter is 48.
6 0
3 years ago
The weight of oranges growing in an orchard is normally distributed with a mean weight of 6.5 oz. and a standard deviation of 1.
sergey [27]
Add 3 standard deviations above and below the mean to get the range in which 99.7% of the data in a normal distribution will fall
6.5 + 4.5 = 11
6.5 - 4.5 = 2
So 2 to 11 ounces would be the interval
6 0
2 years ago
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