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3 years ago

A placebo is a substance that should elicit no positive response in an experimental subject.

Mathematics

1 answer:

adelina 88 [10]3 years ago

7 0

Answer:

A) True

Step-by-step explanation:

In an experiment that has the purpose of testing the efficacy of a procedure or drug, comparison is made against the efficacy of a placebo, a procedure or drug that is <em>intended to have no effect whatever</em>.

Famously, a placebo is often found to be nearly as effective (or even more effective) than the procedure or drug on trial. This effect is known as "the placebo effect."

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Four consecutive odd integers sum to 304. Which integers are they?

Pani-rosa [81]

Answer:

i would tell you but what are the options if you tell me that ill gladly help you out

Step-by-step explanation:

would it be 25.3 or just 25

7 0

3 years ago

Complete the table above.

4vir4ik [10]

$\bf \begin{array}{|c|c|c|ll}
\cline{1-3}
x&y=3x^2&y=3^x\\
\cline{1-3}&&\\
0&\stackrel{3(0)^2}{0}&\stackrel{3^0}{1}\\&&\\
1&\stackrel{3(1)^2}{3}&\stackrel{3^1}{3}\\&&\\
2&\stackrel{3(2)^2}{12}&\stackrel{3^2}{9}\\&&\\
\cline{1-3}
\end{array}$

4 0

3 years ago

Solve the following system by elimination:<br> 4x+3y=2<br> 5x + 4y = 3

MAXImum [283]

Answer:

5x+4y=3

- 4x+3y=2

-----------------

x+y=1

5 0

2 years ago

24 students and Jamal's class are wearing tennis shoes there are 30 students in this class your mom says that 70% of this class

mel-nik [20]

Im not sure if i am understanding the question correctly...

If you are asking if Jama's mom is correct, then no. she is wrong. this is because

if you take the proportion, (is/of)=(%/100) you get (x/30)=(70/100). You then solve for x which in this case would be 21 students are wearing tennis shoes.

Hope this helps.

3 0

3 years ago

Solve each linear equation for x. (A) –12x + 9 = –15x x = (B) 4.5x + 11.5 = 8.5x + 3.5 x = (C) 23x – 9 = 13x x =

mojhsa [17]

Answer:

A. x = -3

B. x = 2

C. x = 9/10

Step-by-step explanation:

(A) –12x + 9 = –15x

Collect like terms

9 = -15x + 12x

9 = -3x

x = 9 / -3

x = -3

(B) 4.5x + 11.5 = 8.5x + 3.5

4.5x - 8.5x = 3.5 - 11.5

-4x = -8

x = -8 / -4

x = 2

-9 = 13x - 23x

-9 = -10x

x = -9 / -10

x = 9/10

5 0

2 years ago