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padilas [110]
3 years ago
7

HELP!!! I dont understand this!!! (BRAINLIEST)

Mathematics
1 answer:
Elden [556K]3 years ago
6 0
I think it’s b also
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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
How 2 explain this?<br><br><br> Thanksss.
exis [7]

Explanation: I would substitute 2 into x which would be y = 2(2) + 3. I would then multiply 2 and 2 which would give me 4 and then add 3 which I get 7. This means that (2,5) is not a solution to the equation.

5 0
3 years ago
List the first 5 terms of the sequence -3n -2.<br>​
katrin2010 [14]

Answer:

-5,-8,-11,-14,-17

Step-by-step explanation:

-3n -2

n=1   -3(1) -2 = -3-2 = -5

n=2   -3(2) -2 = -6-2 = -8

n=3   -3(3) -2 = -9-2 = -11

n=4   -3(4) -2 = -12-2 = -14

n=5   -3(5) -2 = -15-2 = -17

7 0
3 years ago
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Jeff is shopping for a new T-shirt at a clothing store. The graph shows the total price for the shirts depending on how many T-s
Roman55 [17]
Where is the graph??? How I’m I supposed know where the graph is
5 0
3 years ago
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Which scatter plot does NOT suggest a linear relationship between x and y?​
Katen [24]
H because it doesn’t go in a straight line
4 0
3 years ago
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