Pilamontemayor1 Pilamontemayor1
  • 18-01-2015
  • Mathematics
contestada

Y=4x+19
-8x-5y=-11
Can u help me on this

Respuesta :

Porshia
Porshia Porshia
  • 18-01-2015
I'm just going to do substitution
Steps:
1. Substitute the y in -8x-5y=-11 for 4x + 19

-8x-5(4x + 19)= -11
-8x + (-20x) + (-95)= -11
-28x + (-95)=-11
2. Now add 95 on both sides
-28x= 84
3. Divide by 28 on both sides
4. X=-3
5. Now substitute the x in y= 4x + 19 for -3
Y= 4(-3) + 19
Y= -12 + 19
Y= 7
6. Your answer is x = 3 and y= 7 or (3,7)
Answer Link
logo88
logo88 logo88
  • 18-01-2015
y=4x+19 (1)
-8x-5y=-11 (2)
sub 1 into 2
-8x-5(4x+19)=-11
-8x-20x-95=-11
-28x-95=-11
-28x=84
x=84/-28
x= -3
sub into 1
y=4(-3)+19
y=7

therefore x= -3 and y=7
Answer Link

Otras preguntas

is 8.33333333 a rational or irrational number ?
What does 'genericize' mean?
A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which expression, when evaluated, result
The ratio of isabellas money to shanes money is 3:11. If isabella has $33, how much money do Shane and Isabella have together?
The U.S. government openly stated that they would view any European interference in Latin America as
Many of the people who have come to Mexico City have ended up living in areas _____.
Expanded form of 200,007
what is 36 divided by 4 using an array in equal groups
write the expression that shows 3 times the sixth power of 10
hector has 36 action figures. he seperates his action figures into 4 equal groups to share with his friends. how many action figures does each friend get?