Let x and y be the cost of each pen and pencil, respectively. Based on the given above, two equations may be generated. These are,
(1) 3x + 5y = 15
( 2) 4x + 6y = 19
Solving for the values of x and y in these problems give x = 2.5 and y = 1.5. Thus, each pencil costs $1.5.
Answer:
C
Step-by-step explanation:
Answer: x= -5 1/3w -5y
Step-by-step explanation:
add -15y to other side. then divide by -3 on both sides. 16/-3= -5 1/3 w and 15/-3 is -5
Answer:
where is the equation
Step-by-step explanation:
The equation is not there
Problem
Is 4.55 and 1.23456 a rational number
Solution
4.55 can be written as:
455/100 so then it could be a rational number
For the second number we have: 1.23456
And we can write this number as:
123456/100000
So then is also ratioanl