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
Oduvanchick [21]
3 years ago
13

There are six teachers in a room, ages, 40, 50, 45, 55, and 65. If a 29 year old teacher enters the room, how will the mean age

and standard deviation be affected?
Mathematics
1 answer:
klasskru [66]3 years ago
7 0
The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
You might be interested in
Please help me with this ASAP
Digiron [165]

Answer:

270.00 divided by 32 = about $8.44

4 0
2 years ago
What is the equation of the line that passes through points (15,9) and (-2,9)
Vikki [24]

Answer:

y=9

Step-by-step explanation:

Slope: 9-9/-2-15=0

Therefore, y=0x+b

Plug values in: 9=0(-2)+b

0+b=9

b=9

Therefore, equation is y=9

7 0
3 years ago
If y= (2x^2+x)^3 +(x-1) /(1-x). find dy dx​
Mrrafil [7]

Answer:

Step-by-step explanation:

y=(2x²+x)³+(x-1)/(1-x)

=(2x²+x)³+(x-1)/-(x-1)

=(2x²+x)³-1

dy/dx=3(2x²+x)(4x+1)-0

=3x(2x+1)(4x+1)

7 0
3 years ago
You have P = 472 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the r
Ray Of Light [21]
The width would be 236 and the lengths would be 118

Use the equations 2L+W=472 and W*L=MAX
Change the first equation to W=472-2L and plug this into the other equation
(472-2L)(L)=MAX
472L-2L^2=M (take derivative)
472-4L=0 (set to 0 to find the max value)
4L=472 
L=118 
Plug into original to get W=236

Hope this helps!
4 0
3 years ago
Justyna invested $1500 in an account at a 2.5% interest rate compounded annually. She made no deposits or withdrawals on the
olga55 [171]

Answer:

$1783.03

Step-by-step explanation:

Annually compounding interest formula:

PV(1+i)ⁿ

1500(1+.025)⁷

1500(1.025)⁷

1783.028631

which rounds to

1783.03

4 0
3 years ago
Read 2 more answers
Other questions:
  • A triangle has two congruent sides that measure 8.7 cm and 12.3 cm. Which could be the measure of the third side
    15·1 answer
  • Help, in geometry please?<br><br>Thank you!
    5·1 answer
  • What is the answer for m.a.d 6,8,5,3
    5·2 answers
  • Denise is conducting a physics experiment to measure the acceleration of a falling object when it slows down and comes to a stop
    9·1 answer
  • HELP ME OUT PLEASE I WILL GIVE BRAINLIEST
    5·1 answer
  • Age of Peter + age of Pol = 39
    15·2 answers
  • Jocelyn Smith has been injured by a local driver who was not paying attention to the road while he was texting on his cellphone.
    15·2 answers
  • I need help anyone plss :)
    5·1 answer
  • Raymond's age plus two times Melanie's age equals 75. Raymond is 3 years older than Melanie. How old is Melanie? ?​
    9·2 answers
  • Find expressions for the possible dimensions of the rectangular prism.<br> V = 12y3 + 13y2 + 3y​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!