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2 years ago

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1 answer:

7 0

<h2>D. If subjects knew they were receiving an active treatment, researchers would not have known if any improvement was due to the new medication or to the expectation of <u>feeling </u>better. If the researchers knew which subjects received which treatments, they might have treated one group of subjects differently from the other group.</h2><h2 />

For your question... the answer would be D

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The tar contents of 8 brands of cigarettes selected at random from the latest list released by the federal Trade Commission is a

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The mean is 11.7 i don't know the Variance

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2 years ago

Which graph represents exponential decay?

SVEN [57.7K]

EDG Answer: <u>D</u>

<u></u>

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3 years ago

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AC =<br> Round your answer to the nearest hundredth.

garri49 [273]

Answer:

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3 years ago

What is the volume in cubic centimeters of a right circular cone with radius 2 centimeters and height 9 centimeters?

andreev551 [17]

Answer:

$V = 37.7cm^3$

Step-by-step explanation:

The formula for the volume of a cone is:

$V = \frac{1}{3} \pi r^2h$

Given:

- Radius = 2cm

- Height = 9cm

Let's plug these into the equation:

$V = \frac{1}{3} \pi (2)^2(9)$

Now solve:

$V = \frac{1}{3} \pi (4)(9)\\V = \frac{1}{3}\pi 36\\V = \frac{36}{3} \pi \\V = 12\pi \\V = 37.7cm^3$

Therefore, the volume of the cone is 37.7cm^3.

<em>I hope this helps!!</em>

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2 years ago

Y=4x+14 y=6x+8 solve the system

Lyrx [107]

Answer:

Step-by-step explanation: if you are doing subtitution then

Let's solve your system by substitution.

y=4x+14 and y=6x+8

Rewrite equations:

y=4x+14;y=6x+8

Step: Solvey=4x+14for y:

y=4x+14

Step: Substitute4x+14foryiny=6x+8:

y=6x+8

4x+14=6x+8

4x+14+−6x=6x+8+−6x(Add -6x to both sides)

−2x+14=8

−2x+14+−14=8+−14(Add -14 to both sides)

−2x=−6−2x−2=−6−2

(Divide both sides by -2)

x=3

Step: Substitute3forxiny=4x+14:

y=4x+14

y=(4)(3)+14

y=26(Simplify both sides of the equation)

Answer:

x=3 and y=26

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2 years ago

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