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02.04.2020 •
Mathematics
The height in meters of a rocket model on a particular launch can be modeled by the equation H equals -4.90 squared + 243t plus 500 where t is the time in seconds after its engine burns out 500 meters above the ground. When will the rocket drop to a height of 200 meters?
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Ответ:
-6
Step-by-step explanation:
-2(-12 - u )
u = -15
-2 ( -12 - (-15))
remove parenthesis.
-2 ( -12 + 15 )
add -12 and 15
-2 ( 3 )
multiply -2 and 3
= -6