4800 j ya que lo valoras por segundos no por minutos y lo vas a sumar una vez con la misma cantidad que te dio
Answer:
<h2>47.0</h2>
Step-by-step explanation:
she bought 10 pencils and 5 erasers
Let x represent the number of pencils and y represent the number of erasers.
Gabby wants to spend exactly $2.00 on pencils and erasers, hence:
0.15x - 0.1y = 2 (1)
Therefore x = 10 and y = 5
Therefore she bought 10 pencils and 5 erasers.
Find out more at: brainly.com/question/25035724
Answer:
(x+7)(x-7)
Step-by-step explanation:
x²-49
=x²-7²
=(x+7)(x-7)
