Hope this helps check a website calles math-way without the dash
Answer:
Option A. half the distance between point A and point K
Step-by-step explanation:
Ax=Fx
Fy=Ky
The distance between point A and point K is:
AK=Ax+Fx+Fy+Ky
Like Ax=Fx and Fy=Ky
AK=Fx+Fx+Fy+Fy
AK=2Fx+2Fy
Common factor 2:
AK=2(Fx+Fy)
The distance between point P and point Q is:
PQ=Fx+Fy
Then the distance between point P and point Q is half the distance between point A and point K:
PQ=Fx+Fy=AK/2=2(Fx+Fy)/2=Fx+Fy
3.8 because 14+6=20 and .5*20=10 so then you do PEMDAS which means parenthesis, exponents, multiply, divide, add, subtract left to right. So the equation now is 1.8+10-8 so you would do 1.8+10=11.8 and 11.8-8=3.8. In PEMDAS you do the parenthesis first then the exponents and then multiply and divide and then when there is only add and subtract left in the equation you do it left to right.
Answer: D
Step-by-step explanation:
answer
-625
foil
first foil (20 + 15i)(15i - 20) to get
(20 * 15i) + (20 * (-20)) + (15i * 15i) + (15i * (-20))
= (300i) + (-400) + (225) + (-300i)
combine like terms
combine the i terms together to get
(300i) + (-400) + (225) + (-300i)
300i - 400 + 225 - 300i
= -400 + 225
substitute -1 into i^2
remember that i = so = -1, and substitute this into -400 + 225i^2
-400 + 225i^2
= -400 + 225(-1)
= -400 -225
= -625