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Simora [160]
4 years ago
15

which of the following describes the placebo effect? A. Subjects are prevented from knowing whether they are receiving real drug

s or placebos. B. At least one block of subjects in a experiment receives only placebos. C. Subjects may respond to a treatment simply because they believe it is affecting them. D. Subjects receive inactive sugar pills instead of real medication. E. An experiment is repeated many times with real drugs and placebos.
Mathematics
2 answers:
Lady_Fox [76]4 years ago
6 0

The answer would be (C) Subjectsmay respond to a treatment simply because they believe it is affecting them

Lelu [443]4 years ago
4 0

Correct answer choice is:

C. Subjects may respond to a treatment simply because they believe it is affecting them.

Explanation:

A placebo is a material or procedure of no predetermined therapeutic utility. General placebos comprise inactive tablets, inactive injections, false surgery, and other methods.

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Factor by Grouping 8x+8y+rx+ry<br> I do not understand this.
nadezda [96]
FACTORISATION IS BASICALLY FINDING LIKE-TERMS.
1. FIND THE HCF OF 8. HERE, THE HCF IS 8. ALSO, CHECK ALL THE LIKE-TERMS. LIKE-TERMS ARE OUTSIDE THE BRACKET AND UNLIKE TERMS ARE INSIDE.
2. ADD THE TERMS IN THE BRACKET AND THE TERMS OUTSIDE THE BRACKET FROM STEP 1.

8x + 8y + rx + ry
1. 8 (x + y) + r (x + y)
2. (x +y) (8+r)
8 0
3 years ago
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1. Kyle and John are twins who decided to plan an imaginary trip that started with cliff jumping. There were two different spots
Vikki [24]

Answer:

a) Δx = -35ft

b) Δx = -25ft

c) Kyle traveled 10ft more than John

Step-by-step explanation:

We define a coordinate reference system() in which y = 0 corresponds to the water surface.

a) The initial position of Kyle in our coordinate reference system is:

   x_{o} = 20 ft

   and his final position is:

   x_{f} = -15 ft

   Therefore, he traveled

   Δx = x_{f} - x_{o} = -15 - 20 = -35 ft

b) The initial position of John in our coordinate reference system is:

   x_{o} = 15 ft

   and his final position is:

   x_{f} = -10 ft

   Therefore, he traveled

   Δx = x_{f} - x_{o} = -10 - 15 = -25 ft

c) Then, Kyle traveled 10ft more than John

 

6 0
3 years ago
Find the value of z in the figure below.<br>.​
zzz [600]

answer

z = 100

opposite angles

when inscribed in a circle, the opposite angles of a quadrilateral add up to 180

so z + 80 = 180 and y + 120 = 180

solve for z

z + 80 = 180

z = 180 - 80

z = 100

3 0
3 years ago
Given f (x) = startlayout enlarged left-brace first row 3 startroot 2 x minus 1 endroot, for x less-than-or-equal-to 2 second ro
qwelly [4]

<u>These 2 equations has </u><u>no solution</u><u> and the equations are </u><u>independent</u><u> </u><u>of each other.</u>

What is liner equation with two variable?

  • An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero.
  • For example, 10x+4y = 3 and -x+5y = 2 are linear equations in two variables.

-10x² -10y² = -300 ----a

5x² + 5y² = 150 ---- b

While trying to solve this,

We can multiply the eq. b by 2 so we will get eq. c and then add to eq. a we will get 0 as the solution.

10x² + 10y² = 300 ----c

-10x² -10y² = -300 ---a

<u>Everything cutoff, we will </u><u>get 0</u><u>, and there is no solution to these equations.</u>

Learn more about liner equation with two variable brainly.com/question/16933755

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8 0
2 years ago
Sophie takes tap and ballet.
Oksanka [162]
1 1/4 hours. When you add them that’s what you get.
4 0
3 years ago
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