Answer:
Step-by-step explanation:
I don't think it really does grow by a constant rate. As he puts money in, the amount he puts in becomes less significant to the total.
Suppose he starts at 100 dollars.
After week one, he puts in 100 + 15 = 115 dollars.
The 15 dollars represents an increase of 15/100
After the second week, he puts in another 15 dollars. He has 115 in there already.
(15/115) * 100% = 13.04%
After the third week, he puts in another 15 dollars. (15/130 ) * 100% = 11.53
And so one
Answer:
sorry I wish I could help but I'm stupid
One way in which to approach this problem would be to treat it as an equation of ratios and to cross multiply:
<span>[(4x + 15) / 5x)] = 1/2 could be written as:
4x + 15 1
----------- = ---
5x 2
Then 8x + 30 = 5x
3x = -30, and so x = -10 (answer). Be certain to check this answer through substitution!
</span>
Answer:
x=5 and y=-2
Step-by-step explanation:
3x+5y=5
-(7x+5y=25)
-4x=-20
x=5
plug 5 into one of the equations. 3(5)+5y=5
y= -2
