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
Leviafan [203]
2 years ago
12

4 boys have a mean height of 162cm.Another boy with a height of 165cm joins them.What is the new mean height?

Mathematics
1 answer:
Marina CMI [18]2 years ago
7 0

Answer: 162.6cm

Step-by-step explanation:

4 boys have a mean height of 162cm. Their total height will be the average multiplied by the number of boys which will be:

= 162 × 4

= 648cm

A new boy with height of 165cm joined. This means that we now have 5 boys and their total height will be:

= 648cm + 165cm

= 813cm

The new mean height will be:

= Total height / Number of boys

= 813 / 5

= 162.6cm

You might be interested in
90 points!!! Algebra - Please check these
Korvikt [17]

First picture:

2 and 7 are alternate exterior angles, which when added together need to equal 180 degrees.

Angle 7 = 180 - 146 = 34

Answer is B.34

Second picture:

Angle 8 = 48

Angle 8  + angle 7 = 180

Angle 7 = 180 - 49 =  131

Angle 5 and angle 7 are vertical angle, so angle 5 = angle 7 = 131

Angle 6 is a vertical angle to angle 8 so = 49

Angle 1 = angle 5 = 131

Angle 2 = angle 6 = 49

Angle 3 = angle 7 = 131

Angle 4 = angle 8 = 49

4 0
3 years ago
Read 2 more answers
Can u pls help I need a good grade
almond37 [142]

Answer:

15?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please need help 20 points
german

tte corresponding angle is angle 5

3 0
3 years ago
Read 2 more answers
The ratio of the heights of two similar pyramids is 3:2. The volume of the larger pyramid is 135 cm3. What is the volume of the
gladu [14]
l-larger\\s-smaller\\\\\dfrac{h_l}{h_s}=\dfrac{3}{2}\to\dfrac{V_l}{V_s}=\left(\dfrac{3}{2}\right)^3\\\\V_l=135\ cm^3.\\subtitute\\\\\dfrac{135}{V_s}=\dfrac{27}{8}\ \ \ \ |cross\ multiply\\\\27V_s=135\cdot8\\\\27V_s=1080\ \ \ |divide\ both\ sides\ by\ 27\\\\\boxed{V_s=40\ (cm^3)}
3 0
3 years ago
How many sides does a square pyramid have
slamgirl [31]
A square pyramid has 5 sides.

hope this helps!
3 0
2 years ago
Other questions:
  • mark has a cabinet door in his kitchen with the dimensions shown below. he creates a scale drawing where the width of the cabine
    10·2 answers
  • 1.50μm2. Convert this to square meters.
    9·1 answer
  • Tomorrow, Mrs. Wendel's class will be using toothpicks for a science project. Each student must use at least 9 toothpicks for th
    10·1 answer
  • A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 600
    6·1 answer
  • Classify the following is rational or irrational(a) √45​
    15·1 answer
  • A 17-year-old high school senior suddenly developed a high fever and chills, headache, stiff neck, and vomiting. His parents cal
    7·1 answer
  • A middle school coach wrote down the time, in seconds, of her students’ 100-meter dash as shown in the table. Student Time -(sec
    10·1 answer
  • Identify an equation in point-slope form for the line perpendicular to y = -1/2x + 11 that passes through (4, -8)
    14·1 answer
  • 1. 108 identical books have a mass of 30 kg. Find
    15·1 answer
  • 1 yd² of soil containing 30% clay was mixed into 2 yd of soil containing 45% clay. What is the clay content of the mixture?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!