aliafanboy0 aliafanboy0
  • 15-06-2022
  • Mathematics
contestada

Answer and EXplanatrion please

Answer and EXplanatrion please class=

Respuesta :

5043994235 5043994235
  • 15-06-2022

Answer:

whats nine + 10

Step-by-step explanation:

21

Answer Link
ashish4112119
ashish4112119 ashish4112119
  • 15-06-2022

pencil is .10

pen is .90

Step-by-step explanation:

x = pencil y = pen

3x + y = 1.20

7x + 2y = 2.50

try make x or y cancelable

-2 times (3x + y = 1.20) = -6x - 2y = - 2.40

7x + 2y = 2.50

-6x - 2y = - 2.40

x = .10

plug .10 back into one of the equations

3(.10) + y = 1.20

.30 + y = 1.20

y = .90

Answer Link

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