Solve these simultaneous equations 2x+3y=13 4x-y=-2
2 answers:
Answer:
x =
, y = 4
Step-by-step explanation:
2x + 3y = 13
4x - y = -2
Lets get the equation of the y value;
4x - y = -2
Subtract 4x to both sides;
-y = -4x - 2
Divide both sides by -1
y = 4x + 2
Substitute y in the second equation;
2x + 3y = 13
2x + 3(4x + 2) = 13
Distribute;
2x + 12x + 6 = 13
14x + 6 = 13
Subtract 6 from both sides;
14x = 7
Divide both sides by 14;
x = 
Lets calculate the value of x;

Subtract 2 from both sides;
-y = -4
Divide both sides by -1
y = 4
X = 1/2 y = 4 by elimination
You might be interested in
Answer:
for every minute she walked 200 steps so 200= 1
Answer:
A
Step-by-step explanation:
![\dfrac{1}{3}+\dfrac{3}{5}+\dfrac{2}{3}= \left[ \dfrac{1}{3}+\dfrac{2}{3} \right]+\dfrac{3}{5}\\\\\\=\dfrac{3}{3}+\dfrac{3}{5}\\\\\\=1+\dfrac{3}{5}\\\\\\=\dfrac{5}{5}+\dfrac{3}{5}\\\\\\=\dfrac{8}{5}\\\\\\=1\dfrac{3}{5}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D%2B%5Cdfrac%7B3%7D%7B5%7D%2B%5Cdfrac%7B2%7D%7B3%7D%3D%20%5Cleft%5B%20%5Cdfrac%7B1%7D%7B3%7D%2B%5Cdfrac%7B2%7D%7B3%7D%20%5Cright%5D%2B%5Cdfrac%7B3%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B3%7D%7B3%7D%2B%5Cdfrac%7B3%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D1%2B%5Cdfrac%7B3%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B5%7D%7B5%7D%2B%5Cdfrac%7B3%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B8%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D1%5Cdfrac%7B3%7D%7B5%7D)
Answer:
x = 10.55cm
Step-by-step explanation:
Sin 29 degrees = 7cm/x
X = 7cm / sin 29
= 10.55 cm
Answer:
1019191991
Step-by-step explanation:
08899988777777777
Answer:
C. Jarrod paid $1335 more than Paige in taxes
Step-by-step explanation:
just took the test