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
Kryger [21]
3 years ago
5

In a nursery class of 18 pupils, the average is

Mathematics
2 answers:
melamori03 [73]3 years ago
8 0

Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

Average ages = 4.5

Average = total/no. of pupil

4.5 = x/18

x = 81

dimaraw [331]3 years ago
6 0

Answer:

The sum of the age of pupils is 81

You might be interested in
a roller coaster train with 6 passenger cars and the front decoration has a mass of 3500 kg. when the train has the front decora
Arada [10]

Answer:

The mass of each passenger is 550 kg.

The mass of front decoration is 200 Kg.

Step-by-step explanation:

Given : A roller coaster train with 6 passenger cars and the front decoration has a mass of 3500 kg. when the train has the front decoration and only 4 passenger cars, it has a mass of 2400 kg.

To find : What is the mass of the decoration and of each passenger car?

Solution :

Let the mass of each passenger is x.

Let the mass of front decoration is y.

  • When the number of passenger = 6

Mass of 6 passengers and front decoration = 3500 kg.

The equation form is 6x+y=3500 ..........[1]

  • When the number of passengers = 4

Mass of 4 passengers and front decoration = 2400 kg.

The equation form is 4x+y=2400  ........[2]

Solving equation [1] and [2]

Subtract equation [2] from [1],

6x+y-4x-y=3500-2400

2x=1100

x=550

Put value in [1],

6(550)+y=3500

3300+y=3500

y=200

Therefore, The mass of each passenger is 550 kg.

The mass of front decoration is 200 Kg.

8 0
3 years ago
(e^x-e^sinx)/(x-sinx)
alexandr1967 [171]
 Nothing more can be done to this problem, it stays the same. 
 
4 0
3 years ago
How long is the tape for 30 mins
Lerok [7]

Answer:

0.016

Step-by-step explanation:

u divide 0.048 by 30 and the result is the answer

4 0
2 years ago
Read 2 more answers
Sue and Javier are working on a statistics project to estimate the proportion of students at their school who have a pet dog. Su
JulsSmile [24]

Answer:

E) The width of Sue's interval will be narrower than Javiers

Step-by-step explanation:

In confidence intervals, as sample size increases, the width of the confidence interval decreases.

5 0
3 years ago
Ana uses the greatest common factor and the distributive property to rewrite this sum:
creativ13 [48]
Your equation or notation would be:   12(6+5)
8 0
3 years ago
Other questions:
  • PLEASE HELP WILL MARK THE BRAINLIEST
    5·1 answer
  • Please Help FAST
    10·1 answer
  • How to simplify 2431 - 187
    6·2 answers
  • Jan and two of her friends raised money by having a bake sale. They split the proceeds. If each person received $32.19, how much
    10·2 answers
  • A business has $11,080 to spend on new laptops and tablet computers for its salespeople. The laptops cost $515 each. The tablets
    10·2 answers
  • Find the percent change from the first value to the second.<br><br> 50;36
    6·1 answer
  • 1 cubic yard is how many cubic feet
    6·1 answer
  • Sole equation of red variable again. G= 1/6(w+ 40) w== red variable thanks
    8·1 answer
  • Can someone please help me with this one question?!?
    8·2 answers
  • CAN SOMEONE PLEASE HELP!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!