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coldgirl [10]
3 years ago
11

Amy is doing a science experiment on how a certain bacterium reacts to an antibiotic. She has 3 dishes of identical bacterium sa

mples with 14 bacteria in each dish. She gives an antibiotic to all of the bacteria in one dish. All of the treated bacteria died, and the bacteria in the other two dishes survived.
Is there a sampling bias in the situation above?
A.
No. All 3 dishes are filled with the same number of identical bacteria.
B.
Yes. The antibiotic may not work on the other bacteria.
C.
There is not enough information.
Mathematics
1 answer:
Kay [80]3 years ago
4 0

Answer:

the answer is A please give me hearts and stars because it is correct.

Step-by-step explanation:

it is easy you just mark out the ones you know that is wrong and you are left with the answer a which is very correct.

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Which is a rule that describes the translation of a point from 4, -8 to 7, -10
Alexxandr [17]

Answer:

\large\boxed{(x,\ y)\to (x+3,\ y-2)}

Step-by-step explanation:

(4,\ -8)\to(7,\ -10)\\\\4\to7\Rightarrow4+3=7\\\\-8\to-10\Rightarrow-8-2=-10\\\\\text{Conclusion}\\\\(x,\ y)\to (x+3,\ y-2)

4 0
3 years ago
Read 2 more answers
At the local college, a study found that students earned an average of 14 credit hours per semester. A sample of 138 students wa
77julia77 [94]

Answer:

1932 credit hours

Step-by-step explanation:

Create a proportion

credits             credits

----------     =      ----------

students          students

14      ?

---- = -----

1         138

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1932 credit hours

6 0
3 years ago
One large box of birdseed can feed half a dozen parrots for 15 days. For how many days can this same large box of birdseed feed
iren [92.7K]
Box = b
Parrots = p
b/p = number of days it can support the parrots
Half a dozen = 6 (A dozen is 12)
1/6 = 15
To work out the percentage of '6' '5' is, use the equation
(5/6)*100 = 83.333....
Meaning that with one less bird, the box will support the birds for 16.666... (100 - 18.333...) longer
(15/100)*116.666... = 17.4999....
The box will sustain the parrots for 17.5 days
7 0
3 years ago
Give an example of a real number that is not rational.
Sever21 [200]

Answer:

A not rational number is called a irrational number btw. Anyway Some examples are √2 and pi.

7 0
3 years ago
3x-4y=-5 y=4x-2 Is (1,2) a solution of the system?
Orlov [11]
If you want to check if (1,2) is a solution to the system, you have to plug the x and y values back into both equations. If they work for one equation, but not the other, than the coordinates are not a solution to the system.

3(1) - 4(2) = -5
3 - 8 = -5
-5 = -5 

2 = 4(1) - 2
2 = 4 - 2 
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Since both of these checks are true, then (1,2) is a solution to the system.
7 0
3 years ago
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