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Rus_ich [418]
3 years ago
11

Tim is choosing between two cell phone plans that offer the same amount of free minutes. Cingular’s plan charges $39.99 per mont

h with additional minutes costing $0.45. Verizon’s plan costs $44.99 with additional minutes at $0.40. How many additional minutes, a, will it take for the two plans to cost the same?
Help me out and show work for this!
Mathematics
1 answer:
Illusion [34]3 years ago
7 0

Answer: 100 minutes.

Step-by-step explanation:

Make both equations equal each other:

39.99 + 0.45m = 44.99 + 0.40m

Wash out some of the clutter by finding combining like terms:

0.05m = 5

Now, divide by the coefficent of x:

\frac{0.05m}{0.05} = \frac{5}{0.05}

m = 100

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Answer:

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Step-by-step explanation:

You can cut 13 circles from each piece of paper, so ...

  20 papers × (13 circles/paper) = 260 circles

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4 years ago
0.025 divided by 0.5
solong [7]
0.025 ÷ 0.5 = 0.05
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answer: 0.05
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3 years ago
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 120 lb and
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4 years ago
Graph the line y=−3x+b if it is known that the graph goes through point: B(5,2)
Nuetrik [128]

Try this solution:

1. In order to built the line required in the condition it need to determine its equation.

Using the coordinates of point B (5;2), if to substitute them into the given equation: 2=-3*5+b, ⇒ b=17. It means, that the equation of the line required in the condition is y= -3x+17.

2. The graph is in the attachment; point (0;17) is the intersection point of Y-axis and the line.

5 0
3 years ago
Who's good at math? i need help ASAP. *don't mind the red numbers, i think they're wrong*
shepuryov [24]

Answer:

Seems like someone answered them, because the red writing is right, but here's the answers with explanation

Step-by-step explanation:

  • The vertex is the point at which the graph changes direction as we go from left to right.
  • Maximum means the graph is changing direction and going down, so the f(x)-values start becoming smaller. So the graph reached its maximum/highest point and dropped.
  • Minimum means the graph is changing direction and going up, so the f(x)-values start becoming bigger. So the graph reached its minimum/lowest point and started rising
  • Now the answers:
  1. Vertex is (-1,0) because if you look at the numbers for f(x) they go, 4 then 1, then 0, but instead of getting smaller they start getting bigger, so it changes as this point and goes up so <em>minimum</em>
  2. vertex is (3,44), when you look at f(x) it goes 143, then 88, then 55, then 44, then it changes and starts getting bigger so <em>minimum</em>
  3. vertex is (-4,-5) but this one is different from the first two. f(x) starts with -17 then -9, then -5, then it sort of stops and stays there, then -5 then drops and gets smaller. So it changes at x=-4 so use this point, immediately before the change and it is <em>maximum</em>
  4. Vertex is (21,500) because f(x) was getting bigger but then it changes and goes down and becomes smaller, so it is <em>maximum</em>
  5. vertex is (1.5,6) the point immediately before the change, and we see f(x) was getting smaller going down, but it changes and goes up and gets bigger so it is <em>minimum</em>
  6. vertex is (0.5,5) because it was getting big then changed and started getting smaller so <em>maximum</em>
8 0
4 years ago
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