Answer:
3
Step-by-step explanation:
Answer:
Each movie costs $3.75 while each video game costs $5.50.
Step-by-step explanation:
Let the cost of each movie and the cost of each video game be $x and $y respectively.
6x + 5y = 50 ------ equation (1)
2x + 3y = 24 ------ equation (2)
Subtract 3 times of equation (2) from equation (1):
(6x + 5y) - 3(2x + 3y) = 50 - 3(24)
6x + 5y - 6x - 9y = 50 - 72
-4y = -22
4y = 22
∴ y = 5.5
Substitute y = 5.5 into equation (2):
2x + 3(5.5) = 24
2x = 7.5
∴ x = 3.75
24/2=12
The unit rate is 12 packets per pound.
Hope this helps!
The first one is 4
The second one is 2.449489743 or 2.45
Simple
scientific notation
8.009 × 10-3
