1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wel
4 years ago
12

A group of 7 students was asked, "How many hours did you watch television last week?" Here are their responses. 17, 19, 5, 17, 2

0, 6, 16 Find the mean number of hours for these students. necessary, round your answer to the nearest tenth.
Mathematics
1 answer:
Olenka [21]4 years ago
4 0

Answer:

≈ 14.3 hours

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count} = \frac{17+19+5+17+20+6+16}{7} = \frac{100}{7} ≈ 14.3 ( to nearest tenth )

You might be interested in
I need help with this. can anyone help me please.
Dmitriy789 [7]

Answer:

21

Step-by-step explanation:

yeah 2+2 is 21 thanks for the very nonexistent question

4 0
2 years ago
Read 2 more answers
PLEASE HELP I DO NOT UNDERSTAND AT ALL ITS PRECALC PLEASE SERIOUS ANSWERS
Elina [12.6K]

You want to end up with A\sin(\omega t+\phi). Expand this using the angle sum identity for sine:

A\sin(\omega t+\phi)=A\sin(\omega t)\cos\phi+A\cos(\omega t)\sin\phi

We want this to line up with 2\sin(4\pi t)+5\cos(4\pi t). Right away, we know \omega=4\pi.

We also need to have

\begin{cases}A\cos\phi=2\\A\sin\phi=5\end{cases}

Recall that \sin^2x+\cos^2x=1 for all x; this means

(A\cos\phi)^2+(A\sin\phi)^2=2^2+5^2\implies A^2=29\implies A=\sqrt{29}

Then

\begin{cases}\cos\phi=\frac2{\sqrt{29}}\\\sin\phi=\frac5{\sqrt{29}}\end{cases}\implies\tan\phi=\dfrac{\sin\phi}{\cos\phi}=\dfrac52\implies\phi=\tan^{-1}\left(\dfrac52\right)

So we end up with

2\sin(4\pi t)+5\cos(4\pi t)=\sqrt{29}\sin\left(4\pi t+\tan^{-1}\left(\dfrac52\right)\right)

8 0
3 years ago
Read 2 more answers
What is the value of​ n?<br> 4.8×108=3×1051.6×10n
Vaselesa [24]

Answer:

n = 0.0164321

8 0
2 years ago
Read 2 more answers
There were some gumballs in a bag. Mrs. Roxas
Mekhanik [1.2K]

Step-by-step explanation:

6 \times  \frac{3}{2}  \times  \frac{4}{1}  = 36

7 0
2 years ago
Evaluate the radical. 125−−−√3
VikaD [51]

Answer:

Answer should be 5

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Hector took a 1 week vacation, so his next paycheck will only be 3 weeks of work. What percentage of his regular pay should he e
    11·1 answer
  • mark ordere wome balloons for a party that she is having.The balloons cost $4.50 each and there is a service fee of $12.The tota
    10·1 answer
  • Convert 9/16 into decimal
    7·2 answers
  • How to find the sides of a 30 60 90 triangle?
    15·1 answer
  • Paul bought 9 total shirts for a total of 72 tee shirts cost 10 and long sleeve shirts cost 7. how many of each shirt did he buy
    12·2 answers
  • Need help please show how you did it.
    9·1 answer
  • Cary is 7 years older than Dan. In 7 years the sum of their ages will be 79. Find the age of each man now.
    10·1 answer
  • I need help with this plz
    10·1 answer
  • What is the lower bound of 8000? someone help me pleaseeee
    15·2 answers
  • If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is given by y = 56t − 1.86t2.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!