28.02.2021

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average mass of all the students in the class was 35.1 kg. After 1 student left the class, whose mass is 32.3kg, the average mass of the remaining students became 36.3kg, how many students were there in the class room now?
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09.07.2023, solved by verified expert
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Step by step explanation:

Given: The average mass of all the students in the class was 35.1 kg. After 1 student left the class, whose mass is 32.3kg, the average mass of the remaining students became 36.3kg, how many students were there in the class room now?

Find out: how many students were there in the class room after one student left

Solution: Let the total number of remaining student be= n

Let the total number of remaining student be= nAnd the sum of mass of all the students be = x kg

So,

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

Make x the subject of formula

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

And

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

divide both side by n

1. 37.8 x 14 = x 14 - 2.9 x 14 2. The average, №18010483, 28.02.2021 06:16

N = 2.333

so total number of students remaining is 2

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Mathematics
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P Answered by Master

2

Step by step explanation:

Given: The average mass of all the students in the class was 35.1 kg. After 1 student left the class, whose mass is 32.3kg, the average mass of the remaining students became 36.3kg, how many students were there in the class room now?

Find out: how many students were there in the class room after one student left

Solution: Let the total number of remaining student be= n

Let the total number of remaining student be= nAnd the sum of mass of all the students be = x kg

So,

\frac{x}{n + 1}  = 35.1

Make x the subject of formula

--› \: x = 35.1(n + 1)

And

--› \:  \frac{x - 32.3}{n}  = 36.3

--›x - 32.3= 36.3n

--› \: 35.1(n + 1) - 32.3 = 36.3n

--› \: 35.1n + 35.1 - 32.3 = 36.3n

--› \: 2.8 = 1.2n

divide both side by n

n =  \frac{2.8}{1.2}

N = 2.333

so total number of students remaining is 2

Mathematics
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P Answered by PhD

The answer is in the image 

The answer is in the image 
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The solution is in the following image

The solution is in the following image
Mathematics
Step-by-step answer
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F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Mathematics
Step-by-step answer
P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Approximately it is aqual to 1300kg

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
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Step-by-step answer
P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

Mathematics
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P Answered by PhD

Here,

tip=18%of $32

tip=(18/100)*32

=0.18*32

=$5.76

Total payment=32+5.76=$37.76

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