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3 years ago

Solve the system of equations. (3x + 4y = 5) (2x - 3y = -8)

Mathematics

1 answer:

vovikov84 [41]3 years ago

5 0

Answer:

the solution is (-1, 2)

Step-by-step explanation:

Let's solve the system

(3x + 4y = 5)

(2x - 3y = -8)

using the method of elimination by addition and subtraction. Notice that if we multiply all terms of the first equation by 3 and all terms of the second by 4, y as a variable will temporarily disappear:

9x + 12y = 15

8x - 12y = -32

-----------------------

17x = - 17, so x = -1.

Replacing x in the second equation by -1, we get:

2(-1) - 3y = -8, or

2 + 3y = 8,

or 3y = 6. Thus, y = 2, and the solution is (-1, 2).

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Answer:

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Step-by-step explanation:

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1y+2y u can put a 1 so that would be 3y

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3 years ago

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Stolb23 [73]

X+4x+6x=

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3 years ago

Cos ( α ) = √ 6/ 6 and sin ( β ) = √ 2/4 . Find tan ( α − β )

Zina [86]

Answer:

$\purple{ \bold{ \tan( \alpha - \beta ) = 1.00701798}}$

Step-by-step explanation:

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3 years ago

On Friday a bowling alley made $842.72 from Lane rentals in $412.38 from the concession stand.

Neko [114]

Answer:

Step-by-step explanation:

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2 years ago

Please Help!!

melamori03 [73]

Answer:

34 rolls

Step-by-step explanation:

For Frank to cover his whole ceiling, he needs paper that will cover

20 ft x 20 ft

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So, Frank needs to cover 400 ft of the ceiling. He has to split up this large need for paper into smaller rolls, because the rolls he can buy are small.

If each roll has 12 ft, we need to find how many 12-feet are in 400 feet.

To do this, we should divide

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6 0

2 years ago