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larisa86 [58]
4 years ago
5

Suppose that the number of bacteria in a dish increases by 50% every four hours. There are 64 bacteria initially.

Mathematics
1 answer:
aksik [14]4 years ago
7 0
The answer would be  n(t)=64(0.5)^4t

64 bacteria times .5 for 50%
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A city has a population of 51,368. If the population grows 1.8% each year, what will the
Andreyy89

Answer:

56,161

Step-by-step Thought Process:

Use the equation: a(1+r)^x to solve this problem. Let x= time in years, a= initial amount, and r= growth rate.

a(1+r)^x =  51368(1+0.018)^5

When you solve you get this number:

56,160.57516085

Round to the nearest whole number:

56,161

6 0
3 years ago
It is known that 10% of adults can pass a fitness test. What notation would be used to describe a count of the number of adults
Andrej [43]

Answer:  B. x ~ B(50, .1)

In other words, it's the second answer choice

===========================================================

Explanation:

We have n = 50 people in the sample and p = 0.10 is the decimal form of 10%, to represent the probability of success. In this case, we define "success" as "the person passes the fitness test".

The random variable x is the count of how many people pass. So we could have x = 0, x = 1, x = 2, ..., x = 49, x = 50. Basically any whole number from 0 to 50 inclusive. Furthermore, x is approximately modeled by the binomial distribution which we denote as B(n, p) = B(50, 0.1)

So X ~ B(50, 0.1)

3 0
3 years ago
Find three consecutive odd integers such that the sum of the largest and twice the smallest is 25. If x represents the smallest
Murrr4er [49]
1. x
2. x + 2
3. x + 4

x + 4 + 2x = 25. Second option is the answer.


Combine like terms
3x + 4 = 25
Subtract 4 from both sides
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x = 7
5 0
3 years ago
solve |5x - 1| < 1 a. {x|0 < x < 2/5} b. {x|x < 0 or x > 2/5} c. {x|-2/5 < x < 2/5}
aliina [53]
<span>|5x - 1| < 1
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0 < x < 2/5
</span>
8 0
3 years ago
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madam [21]
(4x2) + (3x1)=11
I think that's right, can you have a plus sign
7 0
3 years ago
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