A scientist is testing the effectiveness of a new medicine. The medicine is to be tested on two genetically identical lab rats. One rat receives a placebo pill, while the other rat receives the actual medicine. Which of the following methods is being used to investigate the effectiveness of the medicine?

Answers

Answer 1

Answer:

Answer: on plato its controlled experiment

Step-by-step explanation:

Answer 2

Answer: I would instantly rule out Survey and Seperation Study because 1) a survey is impossible in this instance, and 2) a seperation study will do nothing. It's just moving them apart from eachother. So that leaves Controlled Experiment and Observational Study. An observational study is when you have no control over the groups of subjects, nor what they are given. A controlled experiment is when you change only one aspect of what is given to the group. Since the only thing that is happening is the scientist is giving one rat a real pill, it would fall under controlled experiment. Thus, that is your answer.
Hope I helped ^.^

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If one gallon is the same amount as 16 cups, how many cups equal 2.5 gallons? (Only input whole numbers.)

Answers

Answer:

Step-by-step explanation:

Hello, I think I can help you with this

you can solve this easily using a simple rule of three

Step one

define the relation and solve for x

1 gallon ⇒16 cups

2.5 gallons⇒x cups?

$(1)/(16) = (2.5)/(x) \nisolate\ x\n(1*x)/(16)=2.5\nx=(2.5*16)/(1) \nx=40$

so, 2.5 gallons is the same amount as 40 cups

I hope it helps, Have a fantastic day.

40 cups, 16+16=32, 32+1/2 16=40, 16÷2=8:) hope i helped

1) Use the rules of exponents to evaluate or simplify. Write without negative exponents.3*4^0 = ____

2) Use the rules of exponents to evaluate or simplify. Write without negative exponents.
1 / 4^-2 = ____

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$1)\n 3*4^0=3*1=3\n\n 2)\n a^{-b=((1)/(a))^b}}\n (1)/(4^(-2))=(1)/(((1)/(4))^2)=(1)/((1)/(16))=1*(16)/(1)=16$

Write an equation that models the situation and find its solution.It's going to be Lindsay's birthday soon, and her friends Martin, Sylvia, Tad, and Yvonne have contributed equal amounts of money to buy her a present. They have $25.00 to spend between them. Determine how much each contributed

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Answer:

4x = 25.00

X= $6.25

Step-by-step explanation:

If you divide 25.00 by 4 the answer should be 6.25

9.85 less than the product of 37 and t

Answers

If you would like to write the expression 9.85 less than the product of 37 and t in a math notation, you can do this using the following steps:

9.85 less than the product of 37 and t
the product of 37 and t ... 37 * t
9.85 less than ... - 9.85

The correct result would be 37 * t - 9.85.

What is 1037 by the power of 702