So, this problem asks us to construct an equation that relates the amount of money left to the amount of weeks that has gone by. First, let's assign variables. Let y be the amount of money left, while x is the number of weeks she receives money. The equation would be:
<em>y = 250 - 10x</em>
Answer:
I did for you but I don't know you will understand my HANDWRITING or not .
:(
Answer:
You end up at 0,9
Step-by-step explanation:
Answer:
C: Lucy can type 120 words in 4 minutes
Step-by-step explanation:
I the ratio is 30: 1 that means Lucy can type 30 words in 1 minuet
So multiply 30 by 4 and that would be 120
30 represents words so Lucy can type 120 words per 4 minuets
8x + 7y =89
2x + 5y=45
You want to be able to subtract one away from the other one so you are just left with either x or y. to do this we could multiply the bottom equation by 4
so you would get
8x+7y=89
8x + 20y= 180
Now we can subtract equation 1 from equation 2 so you get
13y=91
this gives you y=7 so to find x we can simply substitute y into an equation;
2x + 5x7=45
2x + 35= 45
2x = 10
x =5
so the final answer is y = 7/ x = 5
