equation csn be represented as
money left = 500 - (n-1)×4.65
so we can see in first week money left
= 500 - (1-1)×4.65= 500-0=500
which is true because first week chaya got gift card and does not spend any money.
now lets assume that on week n money left is 327.95
so by equation
500 -(n-1)×4.65 = 327.95
500- 327.95 =( n-1)× 4.65
n -1 = 172.05/4.65=37
n = 37+1 = 38
in 38th week money left would be 327.95
The answer is 20, because it goes up every time.
Answer:
0
Step-by-step explanation:
Well, if the total is zero, and you are multiplying 3,x,and 2, and multiplying 24 and x, to get zero, wouldn't x just be 0? Because 3 times 0 is 0, 2 times 0 is 0, and 24 times 0 is 0. That would all equal 0. Because you are basically just adding 0 and 0.
5x+2y=29
x+4y=13
Let's eliminate y;
To do so, multiply equation1 by 2;
10x+4y=58
x+4y=13
Subtract equation II from equation I to get;
9x=45
x=5
To solve for y, replace value of x in equation II,
x+4y=13
5+4y=13
4y=8
y=2
