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

b(1)=−54 b(n)= b(n−1) x 4/3 ​ What is the 4th term in the sequence?
Which of the following statements is true for the rotation of any shape
La suma de las edades de tres personas es 127años. La mayor tiene 30 años mas que la menor y la del intermedio 26 menos que la menor.¿ calcula la edad de la per
simplify 7^8 x 7^3 x 7^4 / 7^9 7^5
how a dog meets all of the characteristics of life.
The purpose of the statement of cost of goods manufactured is to: A. Calculate the cost of goods transferred to finished goods inventory during the period. B. C
Which of the following statements is true? a Water resources in the United States and Canada are very limited b. Water resources in the United States and Canada
In both ‘My City' and ‘London', the writers describe ideas about London City. What are the similarities and/or differences between the methods the poets use to
Complete the equation
Is that correct PLEASEEE HELP ME I DONT UNDERSTAND