I'm not certain how exactly this question is supposed to be answered.
If it wants a ratio, Paul and Jennifer's speeds would be in a ratio of 3:4.
It also could be Paul types 20 words per minute slower than Jennifer.
It could be Paul types 33% slower than Jennifer.
Another answer could be Paul's typing speed is 3/4ths of Jennifer's typing speed.
Feel free to ask any further questions.
Answer:
0.0625
Step-by-step explanation:
Answer:
Q7. 11.3 inches (3 s.f.)
Q8. 96.2 ft
Q9. 36.4cm
Step-by-step explanation:
Q7. Please see attached picture for full solution.
Q8. Let the length of a side of the square be x ft.
Applying Pythagoras' Theorem,

Thus, the perimeter of the square is

Q9. Equilateral triangles have 3 equal sides and each interior angle is 60°.
Since the perimeter of the equilateral triangle is 126cm,
length of each side= 126÷3 = 42 cm
The green line drawn in picture 3 is the altitude of the triangle.
Let the altitude of the triangle be x cm.
sin 60°= 
(to 3 s.f.)
Therefore, the length of the altitude of the triangle is 36.4cm.
20 inches is 400
10 inches is 200
5 iches is 100
So 20+10+5=35
Which means 400+200+100= 700
So the frequency of a 35 inch string is 700 cycles per second