For the first shipment, 5r+4h=62.
For the second shipment, 10r+3h=84.
pick either equation and solve for r, them plug this back into the other equation and solve for h, you should then be able to find the price per harmonica and per recorder. Comment if you need more help.
Answer:
1
Step-by-step explanation:
By 2.5 so the 10 will be the width when enlarged
Answer:
2a + 4b = 44
a+b=15
Step-by-step explanation:
Call a the number of chickens, b the number of horses
We have: 2a + 4b = 44
a + b = 15
=> 2(a+b) = 30
<=> (2a + 4b) - (2a + 2b) = 14
2b = 14
=> b = 7
=> a = 8
So 8 chickens, 7 cows.
24 students / 2 = 12 pairs
12-9 = 3 more pairs need magnets
3 * 3 = 9 more magnets
