Answer:
the simplified expression is written as 3.4 x 10³
Explanation:
Given expression;

in scientific notation, the expression is simplified as;

Therefore, in scientific notation, the simplified expression is written as 3.4 x 10³
They are called radicals.................
Answer:
2795.3 J
Explanation:
distance, d = 28 feet = 8.53 m
Force, F = 80 lb = 356 N
Angle, θ = 23°
Work = F x d x cos θ
W = 356 x 8.53 x cos 23
W = 2795.3 J
Thus, the work done is 2795.3 J.