Answer:
yes, your right!
Step-by-step explanation:
To figure ut the roots use the quadratic formula
x = [-b +- sqrt(b^2-4ac)]/2a
x = [-k +- sqrt(k^2-4(1)(5)]/2(1)
x = [-k + sqrt(k^2 - 20)]/2 or [-k - sqrt(k^2 - 20)]/2
So the question says these roots differ by sqrt 61, so let's subtract each
[-k + sqrt(k^2 - 20)]/2 - [-k - sqrt(k^2 - 20)]/2
well the k's cancel in the beginning and we are left with 2sqrt(k^2 - 20)/2, and the 2 on top and bottom reduce to
sqrt(k^2 - 20), so this equals sqrt 61
Set equal and solve
sqrt(k^2 - 20) = sqrt(61)
k^2 - 20 = 61
k^2 = 81, so k = +9 or -9
The greatest value therefore is k = +9.
Answer:
6781
Step-by-step explanation:
Answer:
The acceleration is 965 kg•ms^-2
Step-by-step explanation:
Mathematically;
Force = mass * acceleration
From the question;
Force = 1930 N (kg• ms^-2)
mass = 2kg
Acceleration = Force/mass = 1930/2 = 965 ms^-2