Multiply the upper system by -4:
All of these only require a single operation before you get x alone. for example:
x - 2 = 6
compared with
2x = 6
for the first one, you add two and get x = 8. for the second one, you divide by 2 and get x = 3. they're both a single step, as the name "one-step" equations tells you, and you only have to divide, multiply, add, or subtract one value.
Answer:
x=37.84
Step-by-step explanation:
We can write a ratio to solve
4 gallons 11 gallons
--------------- = ----------------
13.76 x dollars
Using cross products
4x = 11*13.76
4x=151.36
Divide by 4
4x/4 = 151.36/4
x=37.84
Answer:
<h2>
A. ¹²/₅</h2>
Step-by-step explanation:
There is no solution for system of equations:
if:
so first, we we need to transform the equations to the form where the coefficients at y will be the same:
Now we have b₁=b₂ and c₁≠c₂ so the system has no solution if a₁=a₂
5k = 12
÷5 ÷5
k = ¹²/₅
Answer:
Nick made Profit of $3.125 with 25% profit on selling the trading cards.
Step-by-step explanation:
Given:
Amount paid for each card = $.50
Number of cards collected = 25
So Total Amount paid on cards is equal Amount paid for each card multiplied by Number of cards collected and then divided by 100
framing in equation form we get.
Total Amount paid on cards =
Now Given:
He sold them to his friends for 25% more than he paid.
So Total selling price of the card can be calculated by adding Total Amount paid on cards and multiplying 25 with total amount paid on cards and then divided by 100
framing in equation form we get;
Total selling price of the card =
Profit made = Total selling price of the card - Total Amount paid on cards
Profit made = $15.625 - $12.5 = $3.125
Percentile profit =
Hence Nick made Profit of $3.125 with 25% profit on selling the trading cards.