djhawaiiboi djhawaiiboi
  • 02-10-2017
  • Mathematics
contestada

If (a,-7) is a solution to the equation 8a+3b=3, what is a?

Respuesta :

mongadonga
mongadonga mongadonga
  • 02-10-2017
b=-7
8a+3(-7)=3
8a+(-21)=3
8a-21=3
8a=24

Hope this helps. Vote me Brainliest if it does!
Answer Link
nycolesmith10 nycolesmith10
  • 02-10-2017

8a=-3(-7)-5
8a=21 -5=16
A=2
Substitue the value -7 for the b in the equation 
Answer Link

Otras preguntas

What values can n have to make each equation true |n|=3 and |n|=14 |n|=1
Explain how you know that 7/12 is greater than 1/3 but less than 2/3?
How did geographic features influence the Louisiana purchase and the monroe doctrine?
What values can n have to make each equation true |n|=3 and |n|=14 |n|=1
Use the form y=mx +b for linear equations.Write the equation for the following relation.C = {(x, y): (6, 15), (8, 21), (10, 27), . . .}
8x+15=3x-20 how do you do this
Use the form y=mx +b for linear equations.Write the equation for the following relation.C = {(x, y): (6, 15), (8, 21), (10, 27), . . .}
How did geographic features influence the Louisiana purchase and the monroe doctrine?
Explain how you know that 7/12 is greater than 1/3 but less than 2/3?
Ms groves had trays of paint each tray has five colors one of the colors is purple.what fraction of the colors in 20 trays is purple