421 because 400 plus 15 plus 6 is 421
Answer:
8 Bows
Step-by-step explanation:
I will be using money as an example.
It takes 4 quarters to make a dollar. (1/4 1/4 1/4 1/4 = 1)
By using this method we will know that it takes 24 quarters to make 6 dollars and the additional 1/4 is an extra quarter. Now that we have 25 quarters we will divide it by 3 because it takes 3/4 to make a bow.
6x4=24
24 + 1 = 25
25/3= 8.333333
Answer:
(2x-5y)^2
Step-by-step explanation:
4x^2 - 20xy + 25y^2=
(2x) ^2 - 2(2x)(5y)+(5y)^2 =(*)
(2x-5y)^2
(*) A^2 - 2AB+B^2 =(A-B)^2
The solution of are 1 + 2i and 1 – 2i
Solution:
Given, equation is
We have to find the roots of the given quadratic equation
Now, let us use the quadratic formula
--- (1)
Let us determine the nature of roots:
Here in a = 1 ; b = -2 ; c = 5
Since , the roots obtained will be complex conjugates.
Now plug in values in eqn 1, we get,
On solving we get,
we know that square root of -1 is "i" which is a complex number
Hence, the roots of the given quadratic equation are 1 + 2i and 1 – 2i
Answer:
1200
Step-by-step explanation: