-15+7=-8
Adding numbers with different signs makes it subtraction and the answer will have the sign of the bigger number
So u will do 20.2*15=303 so ure answer would be 303 oz
685 students X 0.80 = 548 students going on the field trip.
Answer:
4 horses and 8 ducks.
Step-by-step explanation:
Let the number of ducks be d and the number of horses be h.
d + h = 12
Now ducks have 2 feet and horses have 4 so:
2d + 4h = 32
Multiply the first equation by 2
2d + 2h = 24
Subtract this equation from the second equation:
4h - 2h = 32 - 24
2h = 8
h = 4.
So there were 4 horses and 12 - 4 = 8 ducks.