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

solve equation 7-5c=17+5z
What are the source of air pollution and how this pollution affects the turan heath?
Which expression represents h(x)? (f. g)(x) (g + f)(x) (f- g)(x) (g - f)(x)
Marta porque juega al tenis y hace mucho calor.
If H is the midpoint of GI, solve for x when GH = 5x + 2 and GI = 11x -10.
Twenty divided by 60
What are Venus' and Juno's goals in the Aeneid
I need what to say in sentences
What is the mean of this sample, which consists of 10 values randomly selected from the table? Mean = 7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38 ------------
What is the difference between and “open system” and a “closed system”?