Answer: Both 4 barrels and 7 barrels of beer per crates of olives will allow both Germany and Portugal to gain from trade.
Step-by-step explanation: For every 1 crate of olives produced by Portugal, they will not be able to produce 3 barrels of beer in return. Therefore, for portugal to trade a crate of olives for barrels of beer more than 3 means they are gaining on the trade, in this case, they gain 1 (option A) and 4(option B) extra barrels of beer for every crate of olive traded with Germany. Likewise Germany gains in both cases because any exchange of barrels of beer that is less than 11 barrels of beer to a crate of olives is a gain for Germany. Therefore both 4 barrels and 7 barrels for a crate of olives will lead to both countries gaining.
Selecting 5 students to participate in a math contest would require combinations.
<u>SOLUTION:
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given that, Selecting 5 students to participate in a math contest would require the calculating of a permutation or combination?
So, we need to differentiate between permutations and combinations.
Permutations - In mathematics, permutation is the act of arranging the members of a set into a sequence or order
Combinations - In mathematics, a combination is a selection of items from a collection, such that the order of selection does not matter.
So, now, for our math test, we just require students but not in an order nor with arrangements.
Hence, selecting 5 students to participate in a math contest would require combinations.
Answer:

Step-by-step explanation:
We can write the following system of equations:
, with variables as defined in the question.
Multiply the first equation by
and add both equations to isolate and solve for
:
.
Answer:
right i can't see the puestion
Step-by-step explanation:
Answer:
70 C
Step-by-step explanation:
C = 5/9 * (F-32)
substitute F = 158
C = 5/9 ( 158-32)
Parentheses first
= 5/9 (126)
= 70