Answer:
$3.25 is her change.
Step-by-step explanation:
$10.00 - $6.75 is $3.25, her change.
Step-by-step explanation:
We have to simplify the given expression:
1. 3x+2y-2x+23x+2y−2x+2
Combining the like terms,we get the second step as
2. (3x-2x)+(2y)+(2)(3x−2x)+(2y)+(2)
Now, taking 'x' common from the first two terms, we get third step as:
3. (3-2)x+2y+2(3−2)x+2y+2
Now, simplifying the expressions among the like terms, we get fourth step as:
4. x+2y+2x+2y+2
Answer:
142 3/8 pounds
Step-by-step explanation:
(45 +7/8) + (42 +3/8) + (54 +1/8) = (45 +42 +54) +(7/8 +3/8 +1/8)
= 141 + (8/8 +3/8)
= 142 3/8 . . . . pounds
The two easiest ways to solve a system of equations (in my opinion) are to add the equations together while getting rid of a variable, or solving for a variable in one equation and plugging it into another. The latter is the method I will use.
3x - y = 4 (solve for y)
3x = 4 + y
3x - 4 = y
y = <span>3x - 4 </span>
Now we can plug y into the other equation:
<span>6x + 3y = 13
</span>6x + 3(<span>3x - 4) = 13
</span>6x + 9<span>x - 12 = 13
</span>15x = 25
x = 25/15
x = 5/3
The answer is x = 5/3
If you ever needed to find y as well, you can plug this into either equation to find y.
3x - y = 4
<span>3(5/3) - y = 4
</span>5 - y = 4
y = 1
36 bottles for $4 is the better buy
The rate of the 24 bottles: $1 for 8 bottles
The rate of 36 bottles: $1 for 9 bottle
