5. find the discriminant of 15x2 = 4x – 1 and describe
the nature of the roots of the equation. then solve the
equation by using the quadratic formula.

a) The discriminant of the equation =  - 44

b)The nature of the roots will be imaginary.

c)

Step-by-step explanation:

Here, the given expression is

or,

Now the discriminant (D) of a quadratic equation

D =

Hence, the discriminant of the equation =  - 44

As D< 0, so the roots will be imaginary.

Now,by quadratic formula :

So, here

So, either

or,

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

they used 313 gallons of paint