ashmiller16 ashmiller16
  • 18-11-2015
  • Mathematics
contestada

3/5x+1/2y=30 please help!

Respuesta :

klee48
klee48 klee48
  • 18-11-2015
x=50-1/2y
y=60-3/5x
x=50-1/2(60-3/5x)
x=50-30+3/5x
x=20+3/5x
2/5x=20
x=50
3/5(50)+1/2y=30
30+1/2y=30
1/2y=0
y=0
y=60-3/5(50-1/2y)
y=60-30+3/10y
y=30+3/10y
7/10y=30
300/7=y
3/5x+1/2(300/7)=30
3/5x+150/7=30
3/5x=60/7
x=100/7
SOLUTIONS ARE X=100/7, 50  Y=300/7, 0
Answer Link

Otras preguntas

A pair of $195 boots are discounted 40% How much is the price decreased?
ALGEBRA QUESTION X-2.88=7.11;X=4 TRUE OR FALSE
The narrator of “The Swimming Contest” says the loser(s) (1 point) A) is Abdul-Karim. B) is himself C) are the Arabs D) are all of us.
Solve the system of equations 4x+3y=13 y=-x+4
Which document guarantees freedom of speech, freedom of the press, and freedom of religion? A. Articles of Confederation B. Bill of Rights C. Magna Carta D. Dec
which figure has exacly 2 sets of parallel sides and no perpendicular sides A)rectangle B)hexagon C)square
Molly is wrapping up parts of sandwiches to sell at her sandwich cart. She cuts each sandwich into fourths and then wraps each fourth separately. She says that
which weighs more 5 pounds or 100 ounces
7th Grade Sophie measures the temperature of water every minute as it is heating. After a few minutes, the temperature is 82 degrees Celsius. How far below the
What does regular participation in sports do for your body? helps control caloric intake helps control weight decreases energy levels decreases oxygen transpor