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Zarrin [17]
3 years ago
9

a disinfectant spray bottle says it eliminate 90% of bacteria with each application. you apply the disinfectant onve to a counte

rtop in the shipping department and thrn apply the disinfevtant again to the same countertop. if the bottle is correct, what percentage of the bacteria originally on the tabletop have been eliminated?
Mathematics
1 answer:
Novay_Z [31]3 years ago
3 0
Well, I had to read twince to understand and Find out the answer!:D
XD
The answer would be 10% or 0%one of both
 :Because if you disinfected it once and what was left (if bottle is correct) is 10% of bacteria.
And you swiped it again, then there should be 0% of bacteria,because
 90%(first swipe)
=equals 10% left
 then another swipe
90% -the 10% left would mathamatically equal 10% Dont you think?
Im sure, not positive, but sure.
Am I right?
Hope this helped!
2SamSamySamantha

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!!PLEASE HELP!! CAN GIVE BRAINLIEST!!
lara31 [8.8K]

Answer:

'The closest distance between Earth and Jupiter is greater than the closest distance between Earth and Mercury by approximately 7.66 times'.

Step-by-step explanation:

We are given that,

Distance between Earth and Jupiter = 5.9 × 10⁸ kilometers

Distance between Earth and Mercury = 7.7 × 10⁷ = 0.77 × 10⁸ kilometers

So, we see that,

5.9 × 10⁸ > 0.77 × 10⁸

Also, Ratio = \frac{5.9\times 10^8}{0.77\times 10^8} =7.66

That is,

'The closest distance between Earth and Jupiter is greater than the closest distance between Earth and Mercury by approximately 7.66 times'.

4 0
3 years ago
What is the value of i^20+1?<br><br> A. 1<br> B. -1<br> C. -i<br> D. i
Svetllana [295]
I’m thinking b would be it i’m not so sure
7 0
3 years ago
If a boy has 4 pairs of shorts, 8 shirts, and 2 pairs of shoes, how many different outfits could he wear?
sveta [45]

Answer:

64

Step-by-step explanation:

I paired the first shirt with all of the pants and both shoes which was 8 outfits, but here are 8 other shirts which will also make 8 outfits.

4 0
3 years ago
How can i get answer 5 for -10 - (+5) ?​
timama [110]

Answer:

- 10 - (-20 + 5)

Step-by-step explanation:

- 10 - (-20 + 5)

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4 0
3 years ago
A shopkeeper buys two types of tea one at $20 for 10 kg and the other at $23 for 10 kg. He mixes the two types and the mixture i
lorasvet [3.4K]
Let us take the case of first type of tea
Cost of 10 kg of tea one = $20
Then
Cost of 1 kg of tea one = (20/10) dollars
                                     = 2 dollars
Now let us take the case of the second kind of tea
Cost of 10 kg of tea = $23
Then
Cost of 1 kg of tea = (23/10) dollars
                               = 2.3 dollars
So
The mixture of 1 kg of tea one
and 1 kg of second type of tea will cost = (2.0 + 2.3) dollars
                                                                = 4.3 dollars
Then the cost of 2kg mixture of tea costs = 4.3 dollars
So
The cost of 10 kg mixture will cost = (4.3/2) * 10 dollars
                                                         = 4.3 * 5 dollars
                                                        = 21.5 dollars
Then
The amount of profit made by selling 10 kg tea at $38 = (38 - 21.5) dollars
                                                                                       = 16.5 dollars
So
Percentage of profit made = (16.5/21.5) * 100
                                           = 1650/21.5
                                           = 76.74 percent
So the percentage of profit made is 76.74%.
3 0
3 years ago
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