What is the value of the discriminant of the quadratic equation −1 = 5x2 −2x, and what does its value mean about the number of real number solutions the equation has?

-the discriminant is equal to −16, which means the equation has no real number solutions.
-the discriminant is equal to −16, which means the equation has two real number solutions.
-the discriminant is equal to 24, which means the equation has no real number solutions.
-the discriminant is equal to 24, which means the equation has two real number solutions.

A. The discriminant is equal to −16, which means the equation has no real number solutions.

Step-by-step explanation:

We have been given a quadratic equation . We are asked to find the discriminant for our given equation.

We know that when an equation is in form , its discriminant would be: .

Let us convert our given equation in standard form.

Switch sides:

Discriminant for our given quadratic equation would be:

Since the value of D is less than 0, therefore, our given equation has no real roots and option A is the correct choice.

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m