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AfilCa [17]
3 years ago
13

The human heart beats approximately 1.152 • 10^5 times per day. Approximately how many times does the heart beat in a year

Mathematics
1 answer:
Paraphin [41]3 years ago
3 0
42,048,000, first solve the equation then multiply it by the number of days in a year

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For question 3, the answer is f(x)=3x-4.

In question 3, if -7 is f(x), and it is 3x-4, the answer is -1; if -7 is f(x), and the answer is 4x-3, the answer is -1; if -7 is f(x), and it is 1/2x+3, answer is -20;  if -7 is f(x), and it is 3x+1/2, the answer is -5/2.

But, if -4 is f(x), and it is 3x-4, the answer is 0; if -4 is f(x), and it is 4x-3, the answer is -1/4.

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6 0
3 years ago
A cell phone plan has a monthly cost that is shown in the table below. What is the correct statement regarding the average rate
BARSIC [14]

Answer:

Second from top...

The average rate of change is $0.07, meaning that for each minute of talk time, the monthly bill increases by $0.07.

Step-by-step explanation:

Pick any two points and calculate the slope which will represent the rate of change:

  (Minutes, Cost)

  (0, 9.95)

  (10, 10.65)

Rate of change:

slope m = (y₂ - y₁) / (x₂ - x₁)

             = (10.65 - 9.95) / (10 - 0)

             = 0.7 / 10

             = 0.07

y is cost

m is rate of change

x is minute(s) use

b is fixed monthly cost regardless if any minutes is used

  y = mx + b

  y = .07x + 9.95

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The area for that shape should be 28 because 20+8=28! Hope this helps.
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