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boyakko [2]
3 years ago
8

A phone company offers two packages of service. Package A is $50.00 per month with an additional charge of $0.20 per minute for

long distance. Package B is $60.00 per month with an additional charge of $0.15 per minute for long distance. How many minutes have to be used for the costs of both plans to be the same?
A.
40
B.
400
C.
20
D.
200
Mathematics
1 answer:
umka2103 [35]3 years ago
5 0

Answer:

d

Step-by-step explanation:

mutipily

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Is x+2 a factor of 3x^4+7x^3+3x^2-x-4?
Serhud [2]
Lets check by putting x= - 2
3x^4+7x^3+3x^2-x-4=0
3(-2)^4+7(-2)^3+3(-2)^2+2-4=0
3*16-56+12-2=0
48-56+10=
2=0 No
x+2 is not a factor

4 0
3 years ago
Please answer my question, and if you can please provide an explanation so I can learn from it. 50 POINTS.
gayaneshka [121]

Answer: -4x - y = -50 (second option)

Step-by-step explanation: The only way lines won't intersect is if they're parallel. Parallel lines have the same slope --> the line must have a slope of -4x.

Option 1:

  • y = 4x - 200 (add 4x to both sides)
  • <em>Different slope.</em>

Option 2:

  • -y = 4x - 50 (add 4x to both sides)
  • y = -4x + 50 (divide by -1)
  • <em>Same slope.</em>

Option 3:

  • -y = -4x - 200 (subtract 4x from both sides)
  • y = 4x + 200 (divide by -1)
  • <em>Different slope.</em>

Option 4:

  • -y = -4x - 50 (subtract 4x from both sides)
  • y = 4x + 50 (divide by -1)
  • <em>Different slope.</em>

8 0
3 years ago
Read 2 more answers
Identify the domain of the function shown in the graph.
ivanzaharov [21]

For this case, we find the equation of the line, for this we look for points where the line passes:

(x1, y1) = (- 2,0)\\(x2, y2) = (- 10, -4)

We found the slope:

m = \frac {y2-y1} {x2-x1} = \frac {-4-0} {- 10 - (- 2)} = \frac {-4} {- 10 + 2} = \frac {- 4} {- 8} = \frac {1} {2}

Thus, the equation of the line is:

y = \frac {1} {2} x + b

We substitute a point to find "b":

0 = \frac {1} {2} (- 2) + b\\0 = -1 + b\\b = 1

Finally:

y = \frac {1} {2} x + 1

Now, the domain is given by all the values for which the function is defined.

It is observed that "x" can take any value, that is, it is defined for all real numbers.

Answer:

Option A

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3 years ago
What is the total weight in ounces of the four heaviest eggs?
Orlov [11]

Answer:

6 3/4 ounces

Step-by-step explanation:

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