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2 years ago

6

3x − 2y = 18 y = 2x − 13

2 answers:

Mamont248 [21]2 years ago

6 0

I'm guessing you want x and y solved.

Answer: x=10 and y=6

Explanation:

For X: Substitute the y-equation (y-2x-13) into the first equation (3x-2y=18) so your equation is 3x-2(2x-13)=18. Do the distribution property and the equation will be 3x-4x+26=18. Put like terms on the same side of the equal sign and combine like terms (subtract 26 on both sides) and the equation will be -x = -10. To make x positive, make both sides positive and you get x=10.

For Y: Substitute your x answer (10) into the first equation (3x-2y=18) and you will get 30-2y=18. Subtract 30 from both sides and you get -2y=12. Divide both sides by the common factor of -2 and you get y=6.

jenyasd209 [6]2 years ago

3 0

Answer:

x = - 8

3x - 2y = 18 is the same as 3x - (2x - 13 times 2) = 18

Then I used an algebra site for the rest.

It should be x = - 8

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Step $1$

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<u>Find the length of the segment AB</u>

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Step $3$

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<u>Find the length of the segment AC</u>

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$cos(BAC)=cos (BAD)=\frac{5}{13}$

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Step $4$

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