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lozanna [386]
2 years ago
14

The function f(x)=tan(3/2x-pi/2) has:

Mathematics
1 answer:
zlopas [31]2 years ago
3 0
I think the best option here is B. <span>period 2pi/3 and asymptote at x=0
</span>because period of tanx is pi so period of tan(3/2x) is pi/(3/2) = 2pi/3. I hope this can work good for you. 
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780 students stand in rows and columns. each row has an equal number of students and each column has an equal number of students
Alex73 [517]

Answer:

Step-by-step explanation:

x = number of rows

780=x(x+4)

780=x^{2} +4x

x^{2} +4x-780=0\\(x+26)(x-30)=0\\x=30 \\x\neq -26\\

there are 26 rows and 30 students in each row 26*30=780

8 0
2 years ago
Savanna watches 21 hours of TV per week what is her daily rate
Y_Kistochka [10]

Answer:

3 hours of tv per day

Step-by-step explanation:

there are 7 days in a week

21/7 = 3

5 0
2 years ago
over the course of numbering every page in a book, a mechanical stamp printed 2929 individual digits. How many pages does the bo
Kazeer [188]

1. Page 1-9  (1digit/page x 9page) = 9 digits = 9 page

2. Page 10-99 (2digits/page x 90page)= 180 digits = 90 page

3. Page 100-999 (3digits/page x 900page)= 2700 digits = 900 page

2,929 total digits – (9 digits + 180 digits + 2700 digits)= 40 digits

Since there are only 4 digits after page 999 we divide 40/4 = 10, thus there are 10 more pages after 999

So the book has 1009 pages.

Hope this answer will be a good help for you.

<span> </span>

4 0
2 years ago
julie jot 21 of the 23 questions of her math test correct she got 29 of the 32 questions on her science test correct on which te
Alenkasestr [34]
Make\ a\ common\ denominator:\\\\\frac{21}{23}\ \ \ \ \ \ \ \ \frac{29}{32}\\\\\frac{21\cdot32}{23\cdot32}\ \ \ \ \ \ \ \frac{29\cdot23}{32\cdot23}\\\\\frac{672}{736}\ \ \ > \ \ \ \frac{667}{736}
5 0
2 years ago
Read 2 more answers
A random sample of 28 statistics tutorials was selected from the past 5 years and the percentage of students absent from each on
Zielflug [23.3K]

Answer:

The 90% confidence interval using Student's t-distribution is (9.22, 11.61).

Step-by-step explanation:

Since we know the sample is not big enough to use a z-distribution, we use student's t-distribution instead.

The formula to calculate the confidence interval is given by:

\bar{x}\pm t_{n-1} \times s/\sqrt{n}

Where:

\bar{x} is the sample's mean,

t_{n-1} is t-score with n-1 degrees of freedom,

s is the standard error,

n is the sample's size.

This part of the equation is called margin of error:

s/\sqrt{n}

We know that:

n=28

\bar{x}=10.41

degrees of freedom = 27

1-\alpha = 0.90 \Rightarrow \alpha = 0.10

t_{n-1} = 1.703

s = 3.71

Replacing in the formula with the corresponding values we obtain the confidence interval:

\bar{x}\pm t_{n-1} \times s/\sqrt{n} = 10.41 \pm 1.70 \times 3.71/\sqrt{28} = (9.22, 11.61)

Download xlsx
8 0
2 years ago
Read 2 more answers
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