Answer:
There are no real solutions
Step-by-step explanation:
Recall that for a quadratic equation in the form:
ax² + bx + c = 0
using the quadratic formula, that the discriminant of the formula is given by the following expression
Discriminant = b² - 4ac
If b² - 4ac < 0 ----> No real roots
If b² - 4ac > 0 ----> Two real roots
If b² - 4ac = 0 ----> One real roots
In our case, a = 3, b = -2 and c = 4
b² - 4ac = (-2)² - 4(3)(3) = 4 - 36 = -32 (which is <0)
Hence there are no real roots.
Answer:
The equation is = I =
Step-by-step explanation:
As given ,
M - magnitude of an earthquake
I - intensity of earthquake
I₀ - intensity of a reference earthquake
The relation between the three is as follows :
M = log( )
As given -
M = 4.8, I₀ = 1
⇒ 4.8 = log() = log(I)
⇒ 4.8 = log(I)
⇒I =
So, the equation becomes I =
Answer:
A sample is random when all subjects have an equal opportunity of being chosen, no discrimination and nothing favoured over the other.
Answer:
1. yes
2.1,406
Step-by-step explanation: