7x + 2y = 2
2x - y = 10
2y = - 7x + 2
- y = - 2x + 10
2y = -7x + 2
y = 2x - 10
y= 2x - 10
y = -3.5x + 1
y = 2x - 10
Now, let's find "x" first by doing a substituion !
2x - 10 = - 3.5x + 1
y = 2x - 10
2x + 3.5x = 1 + 10
y = 2x - 10
5.5x = 11
y= 2x - 10
y= 2*2 - 10 = 4 - 10 = -6
In short, the answer would be : y = -6 (Option B).Hope this helps !
Photon
Hey there! :D
One head of lettuce= 5 tomatoes
So, for every 2 tomatoes used, he uses 22/20 pounds of bacon.
5/2= 2.5
22/20*2.5= 2.75
Since he used two heads, multiply that by two.
2.75*2= 5.5
He uses 5.5 pounds of bacon.
Divide that by 3/4.
5.5/.75= 7 1/3
Multiply that by 4.
7 1/3*4= 29 1/3
He makes a total of 29 (rounded) of BLT sandwiches.
I hope this helps!
~kaikers<span />
22,000,000/1,750,000,000
22/1,750 * 100
1.26 %
Answer:
if x is the number of miles driven, the equation is 2.25x + 12=30. solved: x = 8 miles
Step-by-step explanation:
First, you make the equation. If x is the number of miles, the price per mile would be 2.25 times x or 2.25x. You also have to add the one time fee of $12, so you have 2.25x + 12. Next, you're trying to find x if it costs $30 total so you would have 2.25x + 12 = 30.
Solving,
2.25x + 12 = 30
subtract 12 from both sides
2.25x = 18
divide both sides by 2.25
x = 8 miles
Answer:
in chemistry, a certain compound will always have the same proportions, no matter the amount or mass.
for example, water or H2O will always have 2 hydrogen atoms for every oxygen