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
STatiana [176]
3 years ago
6

The arithmetic mean of ten boys is 8 years, 6 months one of them is 13 years old. Then the arithmetic mean of remaining 9 boys i

s
a)9.5 b) 9 c) 8 d) 7
Mathematics
1 answer:
FrozenT [24]3 years ago
3 0
<span>The arithmetic mean of ten boys is 8 years, 6 months = 8.5 years
total age = 10* 8.5 = 85 years

one of them is 13 years
total age of rest = 85 - 13 = 72 years
mean of rest = 72/9 = 8 years

Answer is C) 8 years
</span>
You might be interested in
What is the initial velocity of the boiling water? H=-16t^2+170t
erastova [34]
Idkfjdjiwkwhdjajajasjjaikajshsiskjdhdjdjsjjsjsjsjsjss
5 0
3 years ago
A farm stand wants to sell fruit to local grocery stores in packages with baskets of apples, worth $10 apiece, and baskets of pe
Scorpion4ik [409]
The answer is B 22 apples and 28 peaches
7 0
3 years ago
Triangle A E C is shown. Line segment B D is drawn near point C to form triangle B D C.
AVprozaik [17]

∠BDC and ∠AED are right angles, is  a piece of additional information is appropriate to prove △ CEA ~ △ CDB

Triangle AEC is shown. Line segment B, D is drawn near point C to form triangle BDC.

<h3> What are Similar triangles?</h3>

Similar triangles, are those triangles which have similar properties,i.e. angles and proportionality of sides.

Image is attached below,
as shown in figure
∡ACE = ∡BCD ( common angle )
∡AED = ∡BDC ( since AE and BD are perpendicular to same line EC and make right angles as E and C)
∡EAC =- ∡DBC ( corresponding angles because AE and BD are parallel lines)

Thus, △CEA ~ △CDB , because of the two perpendiculars AE and BD.

Learn more about similar triangles here:
brainly.com/question/25882965

#SPJ1


3 0
1 year ago
Use the Angle Addition Postulate to find the measure of each angle.
Simora [160]
For number 15 and 16, you just have to find the absolute difference between the two points along the calibration of the protractor.

15. ∠BXC = |B - C| = |140° - 110°| = 30°
16. ∠BXE = |B - E| = |140° - 30°| = 110°

For numbers 20 and 21, apply the Angle Addition Postulate. This is when you add the individual interior angles to equate to the total angle.

20. ∠PQS = ∠PQR + ∠RQS
      112° = 72°+ 10x°
       x = 4

21. ∠KLM = ∠KLN + ∠NLM
      135° = 47°+ 16y°
       y = 5.5
5 0
3 years ago
The sales tax on a used car is​ $168168​, and the sales tax rate is 55​%. Find the purchase price ​(the price before taxes are​
Naily [24]

Answer:

$92492.40

Step-by-step explanation:

168168.00 - 55% (75675.60)= $92492.40

7 0
3 years ago
Other questions:
  • Which of the following shows the correct graph and solution of the system
    8·1 answer
  • Which answer is right?????
    9·1 answer
  • Given LINELR, solve for X.<br> ,<br> η<br> ΟΟΟΟ
    11·1 answer
  • Becky leaves school to go home. She walks 6 blocks North and then 8
    8·1 answer
  • Pls help me I need this done!!!
    12·1 answer
  • If the P-value is 0.02, it means that the probability of obtaining the sample statistic is 2%, if the null hypothesis is true. t
    6·1 answer
  • We're working on law of sines and cosines can anyone help me on this question? its a review packet
    8·1 answer
  • Is my answer correct or incorrect? True or false
    13·2 answers
  • Two angles are supplementary and one angle is 18° greater than the other. find measure of the angles.
    8·1 answer
  • Find the inverse of the function.<br> y=x–6
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!