Question

Write the equation 0.3x^2+5x-7=0 in standard form and then choose the value of “b”

70

50

5

Answer 1

b = 5

Explanation:

The given equation is :

`0.3x^2+5x-7=0` .......(1)

It is in the form of quadratic equation. The general form of a quadratic equation is as follows :

`ax^2+bx+c=0` .....(2)

Comparing equations (1) and (2), we get :

a = 0.3, b = 5 and c = -7

Hence, the value of b is equal to 5.