1. B
2. D
Reason for 1: to make a wind turbine go it requires A LOT of energy and u are very high up which causes high risk
2: not much to explain due to all the questions being correct.
Answer:
honestly no clue why does school ask Random questions
Quicksand is mainly water and sand so it makes sense that it eventually leads to a water source underground.
Answer:
(a) check the explanation
(b) the possible values of b is 6i or -29
Explanation:
Given function;
16x⁴ - 4x³– 4b²x² + 7bx + 18
(a)
factor of the given function = 2x + b
then, 2x + b = 0
x = -b/2
substitute the value of b into the given function;
16x⁴ - 4x³– 4b²x² + 7bx + 18

(b)
b³ - 7b² + 36 = 0
b²(b - 7) + 36 = 0
b²(b - 7) = -36
b² = -36 or b - 7 = -36
b = √(-36) or b = -36 + 7
b = √(-1) x √(36) or b = -29
b = 6i or -29