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
kykrilka [37]
3 years ago
13

"The fitted regression line will always run through the mean of the observed data. In other words, the point (x with bar on top,

y with bar on top) will always lie on the estimated (fitted) regression line. Is it true or false?"
Mathematics
1 answer:
Kamila [148]3 years ago
6 0
Great question goodluck in the future
You might be interested in
Using t=tanx/2, write an expression for sinx and cosx in terms of t.
Dafna11 [192]

Assume 0 < <em>x</em>/2 < <em>π</em>/2. Then

tan²(<em>x</em>/2) + 1 = sec²(<em>x</em>/2)   ===>   sec(<em>x</em>/2) = √(1 - tan²(<em>x</em>/2))

===>   cos(<em>x</em>/2) = 1/√(1 - tan²(<em>x</em>/2))

===>   cos(<em>x</em>/2) = 1/√(1 - <em>t</em> ²)

We also know that

sin²(<em>x</em>/2) + cos²(<em>x</em>/2) = 1   ===>   sin(<em>x</em>/2) = √(1 - cos²(<em>x</em>/2))

Recall the double angle identities:

cos(<em>x</em>) = 2 cos²(<em>x</em>/2) - 1

sin(<em>x</em>) = 2 sin(<em>x</em>/2) cos(<em>x</em>/2)

Then

cos(<em>x</em>) = 2/(1 - <em>t</em> ²) - 1 = (1 + <em>t</em> ²)/(1 - <em>t</em> ²)

sin(<em>x</em>) = 2 √(1 - 1/(1 - <em>t</em> ²)) / √(1 - <em>t</em> ²) = 2<em>t</em>/(1 - <em>t</em> ²)

7 0
2 years ago
Can I get help with this please
andriy [413]
Hi, this should be correct. Hope this helps :)

4 0
3 years ago
There were 120 coats in the clearance sale. During the first week of the sale 55% of the coats were sold. How many
Fynjy0 [20]

Answer:

<em>See below.</em>

Step-by-step explanation:

Divide to turn the percentage into a decimal.

\frac{55}{100} =0.55

Then, multiply the percentage by the total to get the amount.

120*.55=66

<em>Answer: </em>66<em />

<em />

<em>:)</em>

4 0
3 years ago
Read 2 more answers
Jonny had ? cakes. He eats 1/2 of
LekaFEV [45]

Answer:

1/2 * (?)

Step-by-step explanation:

Divide (?) Cakes in half

6 0
3 years ago
Read 2 more answers
Please Help ASAP! Will name brainiest!
LiRa [457]

Answer:

work is shown and pictured

4 0
3 years ago
Other questions:
  • The marinade for the barbeque called for 18 pints of tomato juice. how many fluid ounced were needed?
    5·1 answer
  • Devaughn is 14 years older than Sydney. The sum of their ages is 110. What is Sydney's age?
    12·2 answers
  • 48oz sprite for $1.39 or 32 oz dr. pepper for $0.89?
    13·1 answer
  • How to work 2=7+h/4 what isbthe answer
    11·1 answer
  • How you know when you need to add parenthesis in an expression
    6·1 answer
  • 160% of 1825 rounded to nearest tenth
    7·2 answers
  • What is the measure of AngleDCF? Three lines extend from point C. The space between line C D and C E is 75 degrees. The space be
    14·2 answers
  • Two points A and B on a plan represent two localities 12 m apart. Given that the segment AB is 6cn long, find the scale used to
    7·1 answer
  • 25÷5 + 12+5×2 solve this bodmas sum
    12·2 answers
  • Simplify the expressions below.<br> 8-13-(-4)= -1 b. 4-(-7)+(-2)= 9 c. -7+3-20= -24
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!