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Irina18 [472]
2 years ago
5

At a large conference of teachers from a variety of subjects, a random sample of 50 mathematics teachers attending the conferenc

e was selected. Among the selected mathematics teachers, 28 percent had taken one or more courses in statistics. For which of the following populations is 28 percent a reasonable estimate of the percentage of those who have taken one or more courses in statistics?
A. All mathematics teachersB. All mathematics teachers who attended the conferenceC. All mathematics teachers who have taken one or more courses in statisticsD. All teachers who attended the conferenceE. All teachers
Mathematics
1 answer:
melamori03 [73]2 years ago
5 0

Answer:

C. All mathematics teachers who have taken one or more courses in statistics

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The statement tan theta -12/5, csc theta -13/5, and the terminal point determined by theta is in quadrant 2."​
Harlamova29_29 [7]

Answer:

Answer C:

Cannot be true because csc(\theta)  is greater than zero in quadrant 2.

Step-by-step explanation:

When the csc of an angle is negative, since the cosecant function is defined as:

csc(\theta)=\frac{1}{sin(\theta)}

that means that the sin of the angle must be negative, and such cannot happen in the second quadrant. The sine function is positive in the first and second quadrant.

Therefore, the correct answer is:

Cannot be true because  csc(\theta)  is greater than zero in quadrant 2.

6 0
2 years ago
Kelly purchased 6 planters for a total of $18. She wants to purchase another 16 planters at the same unit price. How much will 1
AfilCa [17]

Answer:

Hope this helps

Step-by-step explanation:

If 6 planters= $18   then 16 planters= 16x  18 divided by 6 =$48

5 0
2 years ago
It takes Wayne 1/10 hours to walk a 1/6 mile park loop. What is Wayne's unit rate, in miles per hour
olchik [2.2K]
To solve this problem, we should set up a proportion, letting x represent our unknown number of miles that Wayne walks in one hour.

1/6 mile / 1/10 hours = x miles / 1 hour

Now we use cross-products or the multiplication of the numerator of one fraction times the denominator of the other fraction, setting these two numbers equal.  The resulting equation is:

1/6 = 1/10x

Finally, we must divide both sides by 1/10 to cancel it out on the right side of the equation and get the variable x alone.

x = 5/3 or 1 2/3

Therefore, Wayne walks 1 2/3 miles per hour.
5 0
2 years ago
The expression sinx + cotx cosx can be simplified to___. A. cotx B. cscx C. cosx sinx D. secx
Sav [38]
\sin x+\cot x\cos x=\sin x+\dfrac{\cos x}{\sin x}\cos x=\dfrac1{\sin x}(\sin^2x+\cos^2x)=\csc x
7 0
2 years ago
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Which statements are true about the graph of y < Two-thirdsx + 1? Check all that apply. The slope of the line is 1. The line
Marina CMI [18]

The answer would be:

The x-intercept of the boundary line is (-3/2, 0).

The area below the line is shaded.

The slope of the line should be 2/3. The area below the line shaded because the function using y<.....

Coordinate 2,3 doesn't fulfill the function. 

y < 2/3x + 1

3 < 2/3(2)+1

3< 4/3+1

3< 2.3    ---->false

X intercept is when the y variable is zero. If you put it to the equation

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0= 2/3x+1

2/3x= -1

x= -3/2

8 0
2 years ago
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