Answer:
56 dollars are earned for recycling 28 pounds of copper.
Step-by-step explanation:
Quantity of copper recycled = 
pounds
Amount earned in dollars for recycling pounds of copper = 
Also,
Quantity of copper recycled = 
pounds
Therefore,
Amount earned in dollars for recycling pounds of copper = 
dollars
So,
56 dollars are earned for recycling 28 pounds of copper.
Answer:
7
Step-by-step explanation:
-6+13 is the same as 13-6
she bought 10 pencils and 5 erasers
Let x represent the number of pencils and y represent the number of erasers.
Gabby wants to spend exactly $2.00 on pencils and erasers, hence:
0.15x - 0.1y = 2 (1)
Therefore x = 10 and y = 5
Therefore she bought 10 pencils and 5 erasers.
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Well theres more than 1 location.. you would have 2 obstacles at 2/6, 4/6, and 6/6. If im Correct
Because Theres
I <u>IO</u> I <em>L</em> <u>IO</u> I <u>IO</u>
1 <u>2</u> 3 <em>Hurdle</em><u> 4</u> 5 <u>6</u>
The I are the Tires
The L is hurdles
and the O is Cones
Answer:
A. (3, -3)
Step-by-step explanation:
Let's use the addition/elimination for this to avoid fractions. You could solve one of the equations for y or x and then sub that value into the other equation, but you would have to deal with fractions along the way, so let's just not. Using the addition/elimination (they're the same thing; math books sometimes use one or the other), we line up our equations:
5x + 2y = 9
2x - 3y = 15
It looks like if we want to eliminate the y terms, we can multiply the top equation by 3 and the bottom equation by 2 to get a whole new set of equations:
15x + 6y = 27
4x - 6y = 30
Now we can see that when we add down the columns, the y's cancel each other out. 6y's minus 6y's leaves us with no y's. What we are left with is
19x = 57 so
x = 3.
Now we will sub that 3 back in to either of the original equations to solve for y:
2(3) - 3y = 15 and
6 - 3y = 15 and
-3y = 9 so
y = -3
The solution set then is (3, -3)
