Answer:
15
Step-by-step explanation:
x³ - (3 + x)²
4³ - (3 + 4)²
Answer:
Undefined.
Step-by-step explanation:


The denominator is 0. Therefore, the slope is undefined.
Answer:
D
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180
x = 180° - (90 + 35)° = 180° - 125° = 55°
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Since the triangle is right use the cosine ratio to solve for b
cos35° =
= 
Multiply both sides by 20
20 × cos35° = b, hence
b = 16.38 ( to 2 dec. places )
Answer:
Option 2.
Explanation:
That method is the most random in order to decide what students should take the survey.