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solmaris [256]
3 years ago
14

Suppose you get a cut on your finger and 5 bacteria cells get into the cut. Each hour the number of bacteria cells will double u

nless you clean your cut. If you don't clean your cut how many bacteria cells will be in it after 7 hours?
Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
6 0

Answer:

5⁶⁴ = 152587890625⁴ bacteria's at 7 hours

Step-by-step explanation:

Simple..

it means the bacteria is increasing exponentially.

This is a geometric progression.

at 0 hrs = 0 bacteria

at 1 hr = 5 bacteria

at 2hr = 25 " = 5²

at 3hrs = 25 x 25 = 5² x 5² = 5⁴

at 4hrs = (25x25) x (25x25) = 5⁴x5⁴ = 5⁸

at 5hrs = (5⁸)² = 5⁸ˣ² = 5¹⁶

at 6 hrs = (5¹⁶)² = 5¹⁶ˣ²= 5³²

at 7 hrs = (5³²)² = 5³²ˣ² = 5⁶⁴

5⁶⁴ = 152587890625⁴

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A musician kept track of the concert arenas on this year's tour and found that 60% of the arenas were sold out. Of those that we
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Answer:

6%

Step-by-step explanation:

First, let's break this down:

60% of arenas sold out

  • 90% had been on previous tour

Out of those arenas that did NOT sell out

  • 25% had been on previous tour

We want to know the joint relative frequency of area that were sold out AND NOT on the previous tour schedule, therefore all the information about areas that did NOT sell out is irrelevant.

Because 90% of the areas that were sold out had been on the previous tour, 10% had NOT been on the previous tour.

Therefore, considering all the arenas, 10% of 60% of the arenas were sold out and not on the previous tour.

Let <em>x</em> equal the total number of arenas:

(.10)(.60)x=0.06x

Convert to percent

6%

Therefore, the joint relative frequency of sold out arenas that were not on the previous tour is 6%.

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Step-by-step explanation:

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set (-2.3,-3.2) in above

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