inderpreet
inderpreet inderpreet
  • 23-12-2014
  • Mathematics
contestada

Given the equations 2x + 2y = 16 and 4x - 3y = -3, what are the values of x and y?

Respuesta :

Porshia
Porshia Porshia
  • 23-12-2014
Steps:
1. Put 2x + 2y=16 into slope-intercept form
2. Subtract 2x on both sides
2y= -2x + 16
3. Divide by 2 on both sides
Y= -x + 8
4. Substitute the y in 4x -3y=-3 for -x + 8
4x -3(-x + 8)= -3
5. Multiply everything in parentheses
4x + 3x + (-24)= -3
7x + (-24)=-3
6. Add 24 on both sides
7x=21
7. Divide by 7
8. X= 3
9. Substitute the x for a 3 in one of the equations
Y=-x + 8
Y= -3 + 8
Y=5
10. Your answers are
X= 3 Y= 5

Answer Link

Otras preguntas

The first-order rate constant for the decomposition of n2o5, 2n2o5(g)→4no2(g)+o2(g) at 70∘c is 6.82×10−3 s−1. suppose we start with 2.00×10−2 mol of n2o5(g) in
2,000(3,000)=how many zeros in all in the product and the 2 #s multiplied?
A coin is tossed and tails appears 24 out of 60 tosses. What is the percent chance (result) of the coin landing on heads?
How many neutrons does element X have if its atomic number is 24 and its mass number is 99?
Please help !!!!!!!!!!!
please factorize this for me
What is the image of (1, -6) for a 180° counterclockwise rotation about the origin?
Which equation models a line that passes through point (-2,2) And has a slope of -8
3 1/8 / 5/8 what is the estimated answer
please simplify this equation for me