Answer:
Step-by-step explanation:
Use Pythagorean theorem,
Base² + altitude² =hypotenuse²
x² + 19² = 21²
x² + 361 = 441
x² = 441 - 361
x² = 80

Answer:
BẠN BỊ ĐIÊN À
Step-by-step explanation:
CÚT
60 degrees, hope this helps
Answer:
Step-by-step explanation:
idk i have the same question i need help
Answer:
Rocket B reaches a maximum height that is greater than the maximum height of Rocket A.
Step-by-step explanation:
A graph quickly shows the answer to this question.
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In vertex form, the equation for Rocket A is ...
y = -6(x² -16x +8²) +6(8²)
y = -6(x -8)² +384 . . . . . . . . . maximum height is 384 feet
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The corresponding equation for Rocket B is ...
y = -4(x² -20x +10²) +4(10²)
y = -4(x -10)² +400 . . . . . . . . maximum height is 400 feet
Rocket B reaches a maximum height greater than that of Rocket A.