Answer:
Iran
Step-by-step explanation:
Answer:
Joe makes 5 dollars a week
Step-by-step explanation:
Joe started with 173 so you will subtract that from the total
208-173=35
You will then divide that number by the number of weeks he has worked
35÷7=5
Therefore joe makes 5 dollars a week
Answer:
The population in 2003 was 234 million
Step-by-step explanation:
In order to calculate the population in 2003 we would have to use the The exponential growth formula as follows:
p(y)=ir^t
According to the given data:
p(y)=233 million
i=231 million
t
=1999-1991
Therefore, 233 million=231 million r^(1999-1991)
(233 million/231 million)^(1/8)=r
p(y)=231 million(233 million/231 million)^((y-1991)/8)
Therefore, in 2003
p(2003)=231 million(233 million/231 million)^((2003-1991)/8)
p(2003)=231 million(233 million/231 million)^(1.5)
p(2003)=234 million
The population in 2003 was 234 million
Answer:
88cm
Step-by-step explanation:
(a) first equation x + 2y - 3z = 11
(b) second equation 2x + y - 2z = 9
(c) third equation 4x + 3y +z = 16
1) let's eliminate x from (a) and (b)
multiply (a) by - 2 → -2x -4y +3z = -22 and add it to b):
-2x - 4y +6z = -22
2x + y -2z = 9
--------------- ----
0x -3y +4z = - 13 → -3y + 4z = -13 (d)
2) Now eliminate x from b) and c)
multiply b) by -2 → -4x - 2y +4z = - 18 and add it to c):
-4x - 2y + 4z = -18
4x + 3y + z = 16
-------------- ----
0x + y + 5z = -2 → y+ 5z = -2 (e)
3) Now we have 2 equations with 2 variables:
(d) -3y + z = -13
(e) y+ 5z = -2
4) again eliminate y from (d) and (3). by
multiplying (e) by 3 → 3y +15 z = -6 (f).
Add d) to f):
e) -3y + 4z = -13
f) 3y +15 z = -6
-------------- ----
0y + 19z = - 19 and z = -1
Now replace z by - 1 , starting from the last pair of equation and up, you will find:
x = 2, y = 3 and z = -1
