W=any whole number
D=any number above 0
Hey there!
This is true.
A quadratic equation must be in this form or any other quadratic equation form and must have the squared term. These all need to be real numbers, and it would not work if they weren't. A cannot be zero because if it was the squared term would not be there and therefore it would not be a quadratic equation.
Hope this helps!
This is the concept of trigonometric identities;
To solve the expression we proceed as follows, first we simplify the question, we subtract 3 m from 135m and 96m. Our new height for London eye is 132m and Big Ben is 93 m.
speed is given by:
1 rev/min= 2pi rad/min
thus our speed will be:
1/30 rev/min
=pi/15 rad/min
Subtracting 93 m (Big Ben)- 66 m (radius of the London Eye)= 27 m
This will make right angle as:
adjacent=27 m
hypotenuse=66 m
cos x=27/66=9/22
x=arccos(9/22)
Therefore the time taken will be given by:
2 cos^-1 (9/22)* (15/pi min/rad)
N/B the 2 accounts for both up and down
thus time taken will be:
30*cos^-1(9/22)
=30cos^-1 (9/22) min
Her walk rate is 3.33 meter per sec you find this by dividing meters by seconds
Then you multiply this 3.33 by 50 you get 166.5 meters
d=t3.33 is the equation