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dezoksy [38]
3 years ago
13

Explain how bias in the survey might have affected the results. A survey asks teens, “Do you, like most teenagers, dislike liste

ning to boring classical music?” The results show that teens dislike classical music. A. The survey only included teens and so it is not representative of the entire population. B. The phrasing of the question suggests a bias against classical music. C. The survey may have included only teens who do not like classical music. D. The survey probably did not include teens who play in a youth symphony orchestra.
Mathematics
1 answer:
Mamont248 [21]3 years ago
8 0
B the phrasing of the question suggest a bias against classical music

that is the answer because they are assuming that no teens like classic music, which is just an opinion, which is bias :)
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Given the parabola whose equation is , find the focus and determine if the parabola opens up or down.
ziro4ka [17]
The equation of a parabola is:
y = ax {}^{2}  + bx + c
If a>0, then the parabola opens up;
If a<0, then the parabola opens down.
The coordinates of focus are:
( -  \frac{b}{2a}  \:  \:   \frac{1 - b {}^{2}  + 4ac}{4a} )
4 0
3 years ago
Which of the following expressions illustrates the commutative property of addition? 3 + (-7) = (-7) + 3 -4(5) = 5(-4) 4 + (1 +
umka2103 [35]
By definition, we have to:

 In mathematics, the commutative property or commutativity is a fundamental property that has some operations according to which the result of operating two elements does not depend on the order in which they are taken.

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 We have then, that the commutative property of the addition is:
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 Answer:
 
An expression that illustrates the commutative property of addition is:
 
3 + (-7) = (-7) + 3
4 0
3 years ago
Read 2 more answers
Ignore the decimal pls
Tresset [83]
So if 18 + x =43, then what you need to do is

18 + x =43
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3 years ago
(−2, −3) and (4, −1). Which equation represents the circle?
tankabanditka [31]

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Step-by-step explanation:

3 0
3 years ago
The propeller blades on a submarine have a radius of 6 feet. At full speed, they turn at 120 revolutions per minute. What is the
bogdanovich [222]

Using proportions, it is found that the angular velocity at the tip of the blade is of 753.98 radians per minute.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

Each revolution has 2\pi radians, hence in one minute, the 120 revolutions will have a measure in radians of:

M = 120 x 2pi = 240pi = 753.98

Hence the angular velocity is of 753.98 radians per minute.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

8 0
2 years ago
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