Answer: The required number of books that Ruben had before purchases is 50.
Step-by-step explanation: Given that Ruben bought 6 new books for his collection that increased his collection by 12%.
We are to find the number of books that Ruben had before purchases.
Let x denotes the number of books that Ruben had before purchases.
Then, according to the given information, we have
Thus, the required number of books that Ruben had before purchases is 50.
Answer: each boy had $2.5 left after buying his ticket.
Step-by-step explanation:
Miguel and three of his friends went to the movies. They originally had a total of $40. If each boy had the same amount of money, it means that the amount that each boy( 4 boys in total) has is 40/4 = $10
Let x represent the amount of money that each boy had left after buying his ticket. If each boy spent $7.50 on a ticket, then the equation becomes
x + 7.5 = 10
Subtracting 7.5 from the left hand side and the right hand side of the equation, it becomes
x = 10 - 7.5 = 2.5
Answer:
and
Step-by-step explanation:
An isosceles triangle has two of its sides and angles to be equal. Let each of the unknown equal angles be represented by x. Since one of its angles measures 134°, then;
x + x + 134° = 
2x + 134° =
2x = - 134°
= 46
x = 
=
x =
The other angles that could be in the isosceles triangle are and .
Answer:
2x+7
Step-by-step explanation:
Answer:
8,888.888
Step-by-step explanation:
