583hks8to6o9 583hks8to6o9

03-04-2019
Mathematics

contestada

2x+5y=20. , -2x+20y=-90. one solution. infinity many ir no solution. use elimination to find your answer

Respuesta :

03-04-2019

2x+5y=20
X=10-2.5y

-2(10-2.5y)+20y=-90
-20+5y+20y=-90
25y=-70
Y=2.8

2(2.8)+5y=20

5.6+5y=20
5y=14.4
Y=2.88

CHECK:
2(2.8)+5(2.88)=20

Ver imagen xAJHx

Answer Link

Otras preguntas

Which character in Shakespeare's Julius Caesar must decide whether or not to join the conspiracy to kill his friend Caesar? O Cassius O Mark Antony O Brutus Ti

It has been proposed that we could explore Mars using inflated balloons to hover just above the surface. The buoyancy of the atmosphere would keep the balloon a

x2 + y2 + 10x + 12y + 25 = 0 What is the center of this circle ? What is the radius of this circle ? units

Which is a function of nucleic acids?A regulate cell processesprovide structurebreak down energyfight disease

As Chelsea removes her clothes from the dryer, she sees sparks, which are examples of

compare Loyce reaction to the body to everyone else?

please help asap i do not like slopes

Can someone plz help me plz plz plz i really need help plz

Please help! Jamal deposited $4,253 in a savings account earning 1% interest, compounded annually. To the nearest cent, how much will he have in 4 years? Use th

What is nationalism and give an example of nationalism today?