Answer:
it is more like, 4x4=16
16x4=64
Step-by-step explanation:
I know it can be confusing, but you will eventually get it :)
i think you were adding 4+4+4=12, but that is not what you are supposed to do here.
Hope i helped :)
(x-5)(x+4)
The two numbers should add up to the b value and multiply to the c value.
Check:
-5+4=-1
-5*4=-20
Final answer: B
We are asked to determine a rigid single rigid transformation that maps ΔABC to ΔA'B'C'. Well, we know that rigid transformation preserves the angles and measurements of the sides in the triangle. It is the mapping of all angles and measurements in the same direction and properties. Hence, in this problem, we have the triangle properties below:
Δ ABC = Δ A'B'C
where the properties are:
AA' = BB' = CC'
AB is equal to A'B'
BC is equal to B'C'
CA is equal to C'A'
for the angles, we have it:
∠A = ∠A' , ∠B=∠B' , ∠C=∠C'
Ashley's method is the exact definition of the square root, so it is correct.
Brandon's method is incorrect: dividing by 2 and taking the square root and completely different operations, and it would only work in this special case.
For example, the square root of 9 is 3, but 9/2=4.5.
Similarly, the square root of 16 is 4, but 16/2=8, and so on.
You can try any other couple, it will never work.
Answer:
(1+y^2) /2y
Step-by-step explanation:
arithmetic mean is the average of x and y
(x+y)/2
Using the equation
xy = 1
and solving for x
x = 1/y
Replacing x in the first equation
(1/y + y) /2
Multiply by y/y
(1/y + y) /2 * y/y
(1/y + y)*y /2y
(1+y^2) /2y
