9514 1404 393
Answer:
10
Step-by-step explanation:
Let L and T represent the initial amounts that Leo and Theo had. Let n represent the number of bills exchanged in the first exchange. Then we have ...
L -20n +50n = T -50n +20n . . . . after the first exchange, each has the same
After the second exchange, amounts trade places:
(L +30n) +6(50) = T
Substituting this into the first equation, we get ...
L +30n = ((L +30n) +300) -30n
30n = 300
n = 10
Leo gave Theo ten $20 bills.
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<em>Comment on the amounts</em>
Theo started with $600 more than Leo, including exactly 16 $50 bills. Leo had at least 10 $20 bills, so he could make the initial exchange. Whatever initial amount Leo had in excess of that $200 was matched in Theo's initial amount, but Theo must have had that excess in $20 bills only. For example, Leo may have started with $300 as 10×$20 +2×$50, but Theo's initial $900 would need to be 5×$20 +16×$50.
Since the number of screws needed to build said desks isn't mentioned, we'll say that the value for the screws is x. Basically, you take the number of desks and multiply it by the number of screws needed for each desk.
Then we get the equation:
32(x)= The number of screws needed
Answer:
B. 
Step-by-step explanation:
Change the operation from ÷ to ×, then flip the fraction by your right upside down.
Answer:
x=-2, x=5
Step-by-step explanation:
it just is
Answer:
(-2,1 ) (1,4) (-2,4)
Step-by-step explanation:
