Answer:
Step-by-step explanation:
So the equation is 1/x+1/y=1/7
Multiplying both sides by 7xy, we get
7y+7x=xy
So x+y=xy/7
Or x=-y+xy/7
So x can be:
1,2,3,4,5,6
Answer:
You can use the method of substitution.
Let the advance and same-day tickets be x and y respectively.
x + y = $70 ---> (1)
25x + 35y = $2050 ---> (2)
From Statement (1):
Let (1) × 25
25x + 25y = $1750
10y = $2050 - $1750
= $300
y = $300 ÷ 10
= $30 ---> (3)
From Statement (3):
Substitute (3) into (1)
x + $30 = $70
x = $70 - $30
= $40
Advance ticket: $40
Same-day ticket: $30
The answer is
8(8.8 x 10^12) = <span>70.4 x 10^12
the answer is </span><span>A. 70.4 x 10^12</span>
He payed $15.30 is you divide 13.60 by 8 you get 1.70then you just add 13.60+1.70 because he also bought a pound
Y=30x+18
well if he didn't deliver to any houses he would be paid 18$.
