its equal to because if you do +50-50 and keep going it will always go back to 0. Hope this helps! :D
The rise or an increase in altitude is represented by positive sign and a decend or decrease in altitude is represented by negative sign.
First the helicopter descended 1200 feet. So the change in altitude will be -1200 feet.
Then the helicopter rose by 800 feet. So the change in altitude will be 800 feet.
Finally the helicopter descended by 450 feet. So the change in altitude will be -450 feet.
The net change in altitude will be the sum of all the above 3 changes.
Change in altitude = -1200 + 800 - 450 = -850 feet
The negative sign indicates a descend i.e. loss in altitude. So the net change in altitude was a loss of 850 feet.
Answer: −
16
m
+
20
Step-by-step explanation:
300 mg/tablet
150 tabletsx(300mg/1 tablet)=150x300=45000 mg=45 grams
