Use the discriminant to describe the roots of each equation. then select the best description. 3x2 - 10 = 0 double root real and rational roots real and irrational roots non-real roots

The 120 is not a perfect square so the roots of the equation are irrational.

Given

The given quadratic equation is;

Discriminate is helping us to determine the nature of the roots of the quadratic equation.

The discriminant is defined as the;

From the given equation the value of a = 3, b = 0, and c = -10.

Substitute all the values in the equation

The value of the discriminant is .

Hence, the 120 is not a perfect square so the roots of the equation are irrational.

To know more about Discriminate click the link given below.

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real and irrational roots

Step-by-step explanation:

The discriminant is b^2 -4ac

Where ax^2 +bx+c

a =3 b=0 and c =-10

b^2 -4ac

0^2 -4(3)(-10)

120

Since the discriminate >0, we have 2 real roots

Since 120 is not a perfect square, we will have irrational roots

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.