X+2y=5
x = -2y+5
-2(-2y+5) - y = -4
4y - 10 -y = -4
3y - 10 = -4
3y = 6
y = 2
x + 2(2) = 5
x + 4 = 5
x= 1
Therefore, the coordinates are (1,2).
Find the LCD of both fractions and that is 45.
Make the denominators the same as the LCD
Simplify, now denominators are the same
join the denominators
simplify
Answer: 23/45
Stocks-saving account
975×(1+0.08)−975×(1+0.045)=34.125
A(n)=ar^(n-1) and we can find the rate upon using the ratio of two points...
50/1250=1250r^2/1250r^0
1/25=r^2
r=1/5 so
a(n)=1250(1/5)^1=250
...
You could have also found the geometric mean which is actually quite efficient too...
The geometric mean is equal to the product of a set of elements raised to the 1/n the power where n is the number of multiplicands...in this case:
gm=(1250*50)^(1/2)=250
