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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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PLEASE HELP !!!!!Factor 16x2 - 6x - 7.
Trava [24]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

16x^2-6x-7  Question

Step 2

16x^2-6x-7   Factor

answer

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6 0
3 years ago
Find the distance between the following points<br> C(11, -12), D(6, 2)
Lady bird [3.3K]

Answer:

14.9

Step-by-step explanation:

Formula=\sqrt{(x2-x1)^{2} +(y2-y1)^{2}

x1=11; y1=-12; x2=6; y2=2

Putting these values in the formula, the result will be 14.866≡14.9

3 0
3 years ago
Which of the following statement(s) describes the rate of change of f over the interval 1.5 ≤ x ≤ 3? Select all that apply.
Vesnalui [34]

2 Answers: Choice B and Choice C

The rate of change is 2.

The rate of change is constant.

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

Explanation:

The first point on the left is when x = 1.5 and it has a height of y = 1

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So is the point (3,4) for similar reasoning.

Compute the slope between those points

m = (y2-y1)/(x2-x1)

m = (4-1)/(3-1.5)

m = 3/(1.5)

m = 2

The slope is 2, which is the same as saying the rate of change is 2. This only applies when x > 1 of which the interval 1.5 ≤ x ≤ 3  is a part of.

Since the slope stays at 2 on the interval 1.5 ≤ x ≤ 3, this means we consider the slope to be constant. If the curve bended at all on this interval, then it wouldn't be a constant slope.

6 0
2 years ago
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