Answer:
U.S has the least population density (29.115000021357) people per km²
Denmark has the greatest population density (124.723720797585) people per km²
Step-by-step explanation:
Formula:
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U.S population density : 272 648 000÷9 364 520 = 29.115000021357
Denmark population density : 5 248 000÷42 077 = 124.723720797585
Ghana population density : 18 339 000÷237 533 = 77.206114518825
Therefore:
U.S has the least population density (29.115000021357)
Denmark has the greatest population density (124.723720797585)
Answer: The system of equations are
30x + 15y = 330
x = y + 2
Step-by-step explanation:
Let x represent the number of hours that Caleb worked.
Let y represent the number of hours that Landon worked.
Caleb can iron 30 shirts per hour, and Landon can iron 15 shirts per hour. This means that the number of shirts that Caleb would iron in x hours is 30x and the number of shirts that Landon would iron in y hours is 15y. They ironed 330 shirts between them. This means that
30x + 15y = 330 - - -- - - - - - - - - - - -1
Caleb worked 2 more hours than Landon. This means that
x = y + 2 - - - -- - - - - - - -2
Answer:
Step-by-step explanation:
Mia is 2 1/2 years older than Chloe.
Mia is 12 years old.
<u>Chloe's age is:</u>
- 12 - 2 1/2 =
- 10 - 1/2 =
- 9 1/2
Allen is 6 1/2 years younger than Chloe.
<u>Allen’s age is:</u>
- 9 1/2 - 6 1/2 =
- 9 - 6 =
- 3
Answer:
x = 5, -5, 4i, -4i ;
Step-by-step explanation:
assume
Now the above equation is a quadratic equation.
There are two solutions of any quadratic equation. Solution of a quadratic equation is given by:
similarly there are two solutions of the quadratic equation which are:
Since
Therefore
; where (the numbers with 'i' are called imaginary numbers)
Therefore