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Help please!
Forge welding is a process in which two pieces of steel are joined together by heating the pieces of steel and hammering them
together. A welder takes a piece of steel from a forge at 1620°F and places it on an anvil where the outdoor temperature is 70°F.
The temperature of the steel 7 (in °F) can be modeled by 7=70+1550e where is the time in minutes after the steel is
removed from the forge. How long will it take for the steel to reach a temperature of 105°F so that it can be handled without heat
protection?
Round to the nearest minute.
It will take _____minutes for the steel to reach a temperature of 105°F.
Sagot :
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