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Makovka662 [10]
3 years ago
14

Was this a fair test? is it representative of the effectiveness of the test substance

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
8 0
<span>No. The test is not a fair test. The test is artificial. Testing the disinfectant against bacteria in a test tube is not representative of the effectiveness of the disinfectant against microbes in the environment. Test tube tests test for efficacy. Effectiveness can only be tested out in the environment.</span>
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Many states run lotteries to raise money. A website advertises that it knows​ "how to increase YOUR chances of Winning the​ Lott
Crank

Complete question is;

Many states run lotteries to raise money. A website advertises that it knows "how to increase YOUR chances of Winning the Lottery." They offer several systems and criticize others as foolish. One system is called Lucky Numbers. People who play the Lucky Numbers system just pick a "lucky" number to play, but maybe some numbers are luckier than others. Let's use a simulation to see how well this system works. To make the situation manageable, simulate a simple lottery in which a single digit from 0 to 9 is selected as the winning number. Any value can be​ picked, but for this​ exercise, pick 1 as the lucky number. What proportion of the time do you​ win?

Answer:

10%

Step-by-step explanation:

We are told that To make the situation manageable, simulate a simple lottery in which a single digit from 0 to 9 is selected as the winning number.

This means the total number of single digits that could possibly be a winning one is 10.

Since we are told that only 1 can be picked, thus;

Probability of winning is; 1/10 = 0.1 or 10%

5 0
4 years ago
Jalil and Victoria are each asked to solve the equation ax – c = bx + d for x. Jalil says it is not possible to isolate x becaus
antiseptic1488 [7]

rewrite the expression on the left using the distributive property.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
a boat takes 2 hours to travel 15 miles upriver against the current. if the rate of the boat in still water is 12 miles per hour
liq [111]

Answer:

7 or 8 miles per hour

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Simplify the expression. If not possible, write simplified.
umka2103 [35]

Answer:

-56c+ 30

Step-by-step explanation:

4c + 10(3 – 6c)

Rearrange terms

4c + 10(3 – 6c)

4c+10(-6c+3)

Distribute

4c+10(-6c+3)

4c-60c+30

Combine like terms

4c-60c+30

-56c+30

Common factor

-2(28c-15)

Distribute

-2(28c-15)

-56c+30

Solution:

-56c+30

8 0
2 years ago
Round the answer to 1 decimal digits
Leni [432]

this isnt a question??

5 0
4 years ago
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