Which one number 13 or 14?
Answer:
3√7
Step-by-step explanation:
(√3)(√21) = √(3·21) = √(3·3·7) = √(3²·7) = 3√7
__
The product of the roots is the root of the product. The product, 3·21 = 63, has a square factor that can be removed from under the radical. You need to factor out the root of that square when you simplify the expression.
Y= 19.25x / which is the 3rd one
Answer:
see the explanation
Step-by-step explanation:
<u><em>The correct question is</em></u>
Use the discriminant to determine how many solutions are possible for the following equation (show work).
5x^2-3x+4=0
we know that
The discriminant for a quadratic equation of the form
is equal to
If D=0 then the equation has only one real solution
If D>0 then the equation has two real solutions
If D<0 then the equation has no real solutions (two complex solutions)
in this problem we have
so
substitute
so
The equation has no real solutions, The equation has two complex solutions
therefore
I know there are___No____
real solutions to the equation in problem 4 because ___the discriminant is negative___
Answer:
- Length of the rectangle = 18 m
- Width of the rectangle = 7 m
Step-by-step explanation:
Given:
- Area of the Rectangle = 126 m²
- Length of the rectangle is 4 more than 2 times its width.
To Find:
Solution:
<u>Let's assume :</u>
- Width of the rectangle = x
- Length of the recangle = 2x + 4
We know that,
On Substituting the required values, we get:
Length of the side of the rectangle can't be negative. So, x = 7
Hence,
- Width of the rectangle = x = 7 m
- Length of the rectangle = 2x + 4 = 2(7) + 4 = 18 m