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Naddik [55]
2 years ago
10

Olve the system of equations.

Mathematics
1 answer:
stepladder [879]2 years ago
3 0
The system:
y = 3 x - 7
15 x - 5 y = 14
---------------------
Using the substitution method:
15 x - 5 · ( 3 x - 7 ) = 14
15 x - 15 x + 35 = 14
0 · x = 14 - 35
0 · x = - 21
x , y ∈ ∅
Answer:
D ) There is no solution.
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Assume a healthy heart beats exactly 70 times per minute. If an individual lives to age 85 years, estimate the number of heartbe
den301095 [7]

Answer:

3.12732 × 10⁹ beats

Step-by-step explanation:

Given that, in 1 min, the heart of an individual makes 70 beats, the number of beats the heart of the healthy individual makes in 85 years can be calculated as follows:

1 yr = 365 days, therefore,

85yrs = 85*365 = 31,025 days

1 day = 24 hours

31,025 days = 31,025*24 = 744,600 hours.

1 hr = 60 mins

744,600 hours = 744,600*60 = 44,676,000 mins

This means the individual lived for 44,676,000 mins (85yrs)

If 70 beats are made in 1 min, therefore, in 85yrs, the individual will make:

44,676,000*70 = 3,127,320,000 beats = 3.12732 × 10⁹ beats in 85yrs

4 0
3 years ago
What kind of triangle is this?<br> 5<br> 5<br> 5
olga2289 [7]

Answer:

Equilateral

Step-by-step explanation:

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8 0
2 years ago
In the system if linear equations below a and b are constants.The solution to the systems is 5,1
dalvyx [7]

Answer:

Step-by-step explanation:

Actually Welcome to the Concept of the linear equations..

Here given value of x= 5 and y =1 , so we get as,

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hence adding new equation and equation no. 1

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6 0
2 years ago
3(5+3)^2 +14<br><br><br> help me pls i cannot deal w my parents again
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6 0
3 years ago
Read 2 more answers
What is the answer to that problem?
Rom4ik [11]
It will take him 182 because when you divide 2175 by12 u get 181.25 and you have to add a day for the point .25
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3 years ago
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