The surface area of a regular tetrahedron with edge length s is
... A = (√3)s²
For your edge length of 4 inches, the surface area is
... A = (√3)(4 in)² = 16√3 in²
So, the coefficients are 24, -3, and 7. The letters next to the coefficients are called "variables".
Answer:
The 2nd is 1/3,
and the third one is 3.
Step-by-step explanation:
Answer:
Option A 
Step-by-step explanation:
we know that
The perimeter of the rectangle is equal to
we have
-----> equation A
substitute the value of L in the equation A
Find the perimeter
the discriminant is:
D = (-1)^2 - 4*(-2)*6 = 49
We have a positive discriminant, which means that we have two real solutions.
<h3>
How to find the discriminant?</h3>
For the general quadratic equation, the discriminant is:
a*x^2 + b*x + c = 0
The discriminant is:
D = b^2 - 4ac
In this case, the quadratic equation is:
6*x^2 - x - 2 = 0
Then we have:
a = 6, b = -1, c = -2
Replacing that in the discriminant equation:
D = (-1)^2 - 4*(-2)*6 = 49
We have a positive discriminant, which means that we have two real solutions.
If you want to learn more about quadratic equations:
brainly.com/question/1214333
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