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den301095 [7]
3 years ago
11

X = 2y + 12 5x + 3y =-44

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

(-4, -8)

Step-by-step explanation:

Note that x in terms of y is x = 2y + 12.  Substitute 2y + 12 for x in the second equation:

5(2y + 12) + 3y = -44

or

10y + 60 + 3y = -44

Then 13y= -104, and y = -8

From the first equation we find x = 2(-8) + 12, or x = -16 + 12, or x = -4

Then the solution is (-4, -8)

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the cost of 6 sandwhiches and 4 drinks is $53. the cost of 4 sandwhiches and 6 drinks is $47. how much does one sandwhich cost
Blizzard [7]

6s+4d=$53

4s+6d=$47

Multiply 6 in the first equation which is

36s+24d=$318

Multiply -4 in the second equation which is

-16s-24d=$-188

Then..

36s+24d=$318

-16s-24d=$-188

You cancel out the -24d and +24d

36s=$318

-16s=$-188

Do the math..

20s=$130

Divide 20 by both sides and answer...

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5 0
4 years ago
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UkoKoshka [18]

Answer:

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Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Let f(x)=ln(3x)+2.5 .
Cerrena [4.2K]
For this case what we should do is evaluate the function in each of the points from 2 to 7 and then find the average.
 We have then:
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 Then the average is:
 Average = (4.291759469 + 4.697224577 + 4.98490665 + 5.208050201 + 5.390371758 + 5.544522438) / (6) = 5.019472516
 nearest hundredth
 5.02
 Answer:
 the average rate of change of f (x) from 2 to 7 is  5.02

5 0
3 years ago
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Use the Distributive Property <br> 8(3x+2)
MA_775_DIABLO [31]

Answer:24x+16

Step-by-step explanation:

8 0
3 years ago
How many time larger is 5000 to 5
disa [49]

Answer:

1000 times larger.

Step-by-step explanation:

3 0
3 years ago
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