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Amiraneli [1.4K]
2 years ago
6

Help I don't know the answer.

Mathematics
1 answer:
PIT_PIT [208]2 years ago
7 0
I believe the answer is    n=1.8
Hope this helped.<span />
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Our hearts beat approximately 70 times per minute. Express in scientific notation how many times the heart beats over a lifetime
earnstyle [38]

Answer:

2.69 x 10^{9}

Step-by-step explanation:

We are given the heart's speed - 70 bpm

We count the number of minutes in 73 years :

  • 1 year = 365 days
  • 1 day = 24 hours
  • 1 hour = 60 minutes
  • 73 x 365 x 24 x 60 = 38,368,800 minutes

We multiply the heart's bpm with 73 years worth of minutes

38,368,800 x 70 = 2,685,816,000

Write the number in scientific notation = 2.68581 x 10^{9} ≈ 2.69 x 10^{9}

7 0
3 years ago
What is the value of the expression 11 − ( 1/2 )4 ⋅ 48?
alisha [4.7K]
11-2×48= 412. So the value of the expression is 412.
7 0
3 years ago
How do I put this rational expression in simplest form? Steps please!!!!
Cloud [144]
4.
b^-2-x^-2/b^-1+x^-1

b^-2/b^-1=b^-1
x^-2/x^-1=x^-1
As a result, the simplest form is:
b^-1-x^-1. Hope it help!
8 0
3 years ago
Read 2 more answers
Can somebody please answer all of these questions and only if u know how to do this!!! Thanks
aliina [53]

Hi again I helped you on your last question, I love helping people. Anyway here's the answer!

16. 0.188 rounded nearest hundredth = 0.19

17.  0.455 rounded nearest hundredth = 0.46

18. 0.538 rounded nearest hundredth = 0.54

19. 0.417 rounded nearest hundredth = 0.42

20. 2.833 rounded nearest hundredth = 2.83

21. 3.667 rounded nearest hundredth = 3.67

4 0
2 years ago
Heyy! i’ll give brainliest please help
Reptile [31]

Answer:

The last one

Step-by-step explanation:

The more weight something has the faster it will fall

3 0
2 years ago
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