Solve the problem.If a rock falls from a height of 80 meters above the ground, the height H (in meters) after x seconds can be approximated using the formula H = 80 - 4.9x2. Evaluate the expression 80 - 4.9x2 for x = 2 to find the height of the rock after 2 seconds.
A. -16.04 m
B. 60.4 m
C. 300.4 m
D. 70.2 m
Answer: B
Mathematics
You might also like to view...
Find the area enclosed by the given curves.y = 
x2, y = -x2 + 6
A. 16 B. 8 C. 4 D. 32
Mathematics
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sin 405°
A. 
B. - 
C. - 
D. 
Mathematics
What are the dimensions of a rectangle whose area is 
square feet?
?
__________ feet
What will be an ideal response?
Mathematics
Use transformations to graph the function.y = -4 cos (x - 
)
A. 
B. 
C. 
D. 
Mathematics