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soldier1979 [14.2K]
3 years ago
9

on January 1,1980 a city had 100,000 people. During the year 1,000 people died, 2,000 babies were born, 3,000 people moved out,

and 10,000 movied in. how many people were in the city by the end of 1980​
Mathematics
1 answer:
svp [43]3 years ago
6 0

Answer:

By the end of 1980​ there are 112,000 people in the city.

Step-by-step explanation:

Total number of people on January  1, 1980    =  100,000 people

Number of people died during the year =  1,000

So, during the year number of people alive

= Total people - Number of people who died

= 100,000 people  - 1,000 people  = 99,000 people

Now, number of babies born during the year = 3,000

So, during the year number of people alive

= Total people  left +  Number of babies born

= 99,000 people + 3,000  babies = 102,000 people

Number of people who move in during the year =  10,000

So, at the end of  the year number of people in the country

= Total people  present +  Number of people who  moved in

= 102,000 people  +  10,000

= 112,000 people

or, the number of people present in the country = 112,000

Hence, by the end of 1980​ there are 112,000 people in the city.

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40 points
siniylev [52]

Answer:

The answer is high inflation

Step-by-step explanation:

7 0
3 years ago
Is it 1 solution, no solution or infinite solution? <br> -28 = -7(3x + 4) + 21
prohojiy [21]

x = 1 because -7(3x + 4) must be -49 so 3x + 4 must me 7 so x = 1

5 0
3 years ago
Does the equation 2x-7=5+x have exactly one solution
Goshia [24]

Answer:

12

Step-by-step explanation:

2x - 7 =5 +x

2x - x =5 +7

x =12 (one solution)

4 0
3 years ago
The number of girls at middle school Cyber summer camp was six more than twice the number of boys. The total of 156 middle schoo
Sloan [31]
Girls: 81
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4x = 150
x = 37.5
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7 0
3 years ago
Janelle and her best friend Carmen go shopping. the function p(t) = 5^4-3x^3 +2^2+24 represents how much money each girl spent b
emmasim [6.3K]
<h2>Hello!</h2>

The answer is:

They spent $176 together.

<h2>Why?</h2>

We are given an expression which represents the money spent for each girl, it's a function of time and it will show how much they can spend in terms of hours.

Assuming that you have committed a mistake writing the equation, otherwise, the given options would not fit, the expression is:

p(t)=5x^{4}-3x^{3}+2x^{2}+24

Now, from the statement we know that the function represents how much money each girl spent, so, if we need to calculate how much money they will spend together, we need to multiply the expression by 2, so we have:

p(t)=2(5x^{4}-3x^{3}+2x^{2}+24)

Then, calculating the spent money for 2 hours, we need to substitute the variable "x" with 2.

Calculating we have:

p(2)=2(5*(2)^{4}-3*(2)^{3}+2*(2)^{2}+24)=2(5*16-3*8+2*4+24)

p(2)=2(5*16-3*8+2*4+24)=2(80-24+8+24)=2*88=176

Hence, we have that they spent $176 together.

Have a nice day!

3 0
3 years ago
Read 2 more answers
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