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Klio2033 [76]
3 years ago
6

One store sells milk for $3.00 per gallon. A second store sells milk for $0.80 per quart. If you need two gallons, which store s

hould you buy from?
Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0
It will be $3.75 for two gallons

kompoz [17]3 years ago
6 0
$3.00 x 2 = $6.00
$0.80 x 4 = $4.80
The second store is better to buy from
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A carpenter purchased 50 ft of redwood and 80 ft of pine for a total cost of $285. A second purchase, at the same prices, includ
Marizza181 [45]

Hey there!!

Let us take the price of the redwood as ' x ' and pine as ' y '

Then , we take it into an equation. We get,

50x + 80y = 285 -------------- ( 1 )

80x + 50y = 339 -------------- ( 2 )

Now, multiply the first equation with 8 and the second equation with 5

400x + 640y = 2280

400x + 250y = 1695

Now subtract the second equation from the first

390y = 585

y = 585 / 390

y = $1.5

Now substitute this into any equation

50x + ( 80 ) ( 1.5 ) = 285

50x + 120 = 285

50x = 165

x = 165 / 50

x = $3.3

Redwood = $3.3

Pine = $1.5

Hope helps!



6 0
3 years ago
The chart below lists the original and sale prices of items at a clothing store.
Tom [10]

Answer: C) For every original price, there is exactly one sale price.

For any function, we always have any input go to exactly one output. The original price is the input while the output is the sale price. If we had an original price of say $100, and two sale prices of $90 and $80, then the question would be "which is the true sale price?" and it would be ambiguous. This is one example of how useful it is to have one output for any input. The input in question must be in the domain.

As the table shows, we do not have any repeated original prices leading to different sale prices.

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Answer:

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Step-by-step explanation:

Please see attached pictures for the full solution.

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|9+1|

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-9 is farther from 0 on the number line.
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