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Answer
First Question
Options A and B are correct.
The correct answers that satisfy the inequality given include 1600 and 2000.
Second Question
d = 948.6 m
Explanation
We are given that
√x ≥ 40
We are then asked to pick the options that satisfy the given expressio,
To do this, we need to first square both sides
√x ≥ 40
x ≥ 1600
So, for the options, we will pick the answers that are greater than or equal to 1600
The correct answers include 1600 and 2000.
All the other options are not equal to or greater than 1600.
Second Question
We are given that the expression that gives the relationship between the distance the object falls (d) and the time taken (t) is
√d = (t) . (2.8)
√d = 2.8t
We are then asked to solve the distance a screw that falls for 11 seconds falls
√d = 2.8t
t = 11 seconds
√d = 2.8t
√d = 2.8 (11)
√d = 30.8
Square both sides
d = 948.6 m
Hope this Helps!!!