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3 years ago

7

Help please! Leave an answer for both!

2 answers:

VMariaS [17]3 years ago

8 0

The poll is most likely biased because it is at a basketball game, and you wouldn't be at a basketball game if you didn't like basketball. If they were to do this at a different sporting event, the answer would probably be different so I think it is biased. The other method they could've done is to ask the entire school.

Studentka2010 [4]3 years ago

5 0

This poll is unbiased because only the students in the poll are saying that basketball is better. You should have a poll that includes everyone. That should give everyone a opportunity on saying what’s better and will get you a biased answer

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{8, 15, 9, 18, 9, 17, 22, 10, 11, 9, 13}<br> What is the interquartile range of the data set?

8_murik_8 [283]

Answer:

IQR = 8

Step-by-step explanation:

The interquartile range (IQR) is the difference between the upper quartile Q₃ and the lower quartile Q₁

We require the data arranged in ascending order and to find the median Q₂

The median is the middle value of the data arranged in ascending order.

8, 9, 9, 9, 10, 11, 13, 15, 17, 18, 22

↑ Q₂

The upper quartile is the middle value of the data to the right of the median

13, 15, 17, 18, 22

↑ Q₃

The lower quartile is the middle value of the data to the left of the median

8, 9, 9, 9, 10

↑ Q₁

IQR = Q₃ - Q₁ = 17 - 9 = 8

6 0

3 years ago

Describe, in your own words, the identity sin^2(x) + cos^2(x) = 1.

Crank

Look at the attached figure. We define the unit circle as a circle with center $A$ in the origin (0,0) and radius 1.

Then, we consider a point P on the circumference. We call $\alpha$ the angle between the positive half of the x axis and the radius AP.

We define

$\cos(\alpha) = \overline{AD},\quad \sin(\alpha) = \overline{AC}$

As you can see, ACD is a right triangle, and so we have

$\overline{AD}^2+\overline{AC}^2=\overline{AP}^2$

But since we know that AD is the cosine, AC is the sine, and AP is the radius (which is 1, and remains 1 when squared), we have just found out that

$\cos(\alpha)^2+\sin(\alpha)^2=1$

4 0

3 years ago

Allushta [10]

ANSWER

The correct answer is C.

EXPLANATION

The given polynomial has equation

$p(b) = {b}^{3} + 3 {b}^{2} - b + 12$

According to the Remainnder Theorem, if (b+4) is a factor of p(b) = b³+3b²-b+12 then

$p( - 4) = 0$

We now substitute b=-4 to check.

$p( - 4) = {( - 4)}^{3} + 3 {( - 4)}^{2} - ( - 4) + 12$

$p( - 4) = - 64+ 48 + 4 + 12$

Simplify:

$p( - 4) = - 16 + 16 = 0$

Since p(-4) is zero, (b+4) is a factor of p(b) = b³+3b²-b+12.

The correct choice is C.

5 0

3 years ago

A trapezoid is shown. Use the ruler provided to measure the dimensions of the trapezoid to the nearest inch.

Tasya [4]

We need measurements

7 0

3 years ago

What is the coordinate of point P that lies along the directed line segment from Q(2,5) to R7, 12) and partitions the segment in

nirvana33 [79]

Answer:

Step-by-step explanation:B

7 0

3 years ago