Josuesantiago84 Josuesantiago84
  • 01-06-2018
  • Mathematics
contestada

Solve the system of equations 2r + 2s = 50 and 2r – s = 17. A. r = 3, s = 11 B. r = 25, s = 33 C. r = 14, s = 11 D. r = –8, s = 33

Respuesta :

alarisaT
alarisaT alarisaT
  • 01-06-2018

[tex]2r = 17 + s = 50 - 2s \\ 3s = 50 - 17 = 33 \\ s = 11 \\ \\2 r = 50 - 2s \\ 2r = 50 - 2 \times 11 = 50 - 22 = 28 \\ r = 14[/tex]




C. r=14, s =11
Answer Link

Otras preguntas

Which process requires an external power source?(1) neutralization (3) fermentation(2) synthesis (4) electrolysis
Which compound is a member of the same homologous series as C3H8? (1) CH4 (3) C5H8 (2) C4H8 (4) C6H10
Which line segments are diameters of circle E? Choose all answers that are correct. A. /AB B. /AC C. /BD D. /DE
what is the name of the process where animal cells break down sugar?
is 5 yards and 1 feet greater then 192 inches
When 50. milliliters of an HNO3 solution is exactly neutralized by 150 milliliters of a 0.50 M solution of KOH, what is the concentration of HNO3? (1) 1.0 M (3)
What sap and why is it important to the plant
When 50. milliliters of an HNO3 solution is exactly neutralized by 150 milliliters of a 0.50 M solution of KOH, what is the concentration of HNO3? (1) 1.0 M (3)
Justify each step used to simplify the expression.3x+2y-2x+2=3x-2x+2y+2
Which substance is an Arrhenius acid? (1) LiF(aq) (3) Mg(OH)2(aq) (2) HBr(aq) (4) CH3CHO