emma5710
emma5710 emma5710
  • 04-08-2018
  • Mathematics
contestada

Plzzz Help with number 139 don’t understand

Plzzz Help with number 139 dont understand class=

Respuesta :

Аноним Аноним
  • 04-08-2018

2a + 2s = 32, 6a + 7s = 106

Solve for a in the first equation.

2a = 32 - 2s

a = 16 - s

Substitute a into the second equation.

6(16 - s) + 7s = 106

96 - 6s + 7s = 106

96 + s = 106

s = 10

Substitute s into the first equation.

2a + 2(10) = 32

2a + 20 = 32

2a = 12

a = 6

a = 6, s = 10

Answer Link

Otras preguntas

Where do you put smart hot dogs riddle
Why are are earthquakes common at mid-ocean ridges?
On a certain hot​ summer's day, 310 people used the public swimming pool. The daily prices are $1.75 for children and $2.50 for adults. The receipts for admissi
Germany did not become a nation. What happened to the German states?
Now that you know that Mendel failed to pass his teaching exams twice, what do you think of him?
0.25 divided [tex]\frac{1}{4}[/tex]
what is the equation of the line in slope-intercept form? that has a slope of -2/5 and passes through (15,-2)
Someone help me!! I’m not sure how to do this
what is the impact of image/photo editing?
equation for (2x +10)​